c_src : Regenerated c_src to prevent use of String contructors

[nit.git] / c_src / standard___collection___array._sep.c

diff --git a/c_src/standard___collection___array._sep.c b/c_src/standard___collection___array._sep.c
index f9f92e0..9ede4b2 100644 (file)
--- a/c_src/standard___collection___array._sep.c
+++ b/c_src/standard___collection___array._sep.c
@@ -1,5 +1,6 @@
 /* This C file is generated by NIT to compile module standard___collection___array. */
 #include "standard___collection___array._sep.h"
+static const char LOCATE_standard___collection___array___AbstractArrayRead___length[] = "array::AbstractArrayRead::(abstract_collection::Collection::length)";
 val_t standard___collection___array___AbstractArrayRead___length(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -23,6 +24,7 @@ val_t standard___collection___array___AbstractArrayRead___length(val_t p0){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___array___AbstractArrayRead___is_empty[] = "array::AbstractArrayRead::(abstract_collection::Collection::is_empty)";
 val_t standard___collection___array___AbstractArrayRead___is_empty(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -49,7 +51,7 @@ val_t standard___collection___array___AbstractArrayRead___is_empty(val_t p0){
   REGB2 = TAG_Bool(IS_EQUAL_OO(REGB0,REGB1));
   if (UNTAG_Bool(REGB2)) {
   } else {
-    /* ../lib/standard/kernel.nit:227 */
+    /* ../lib/standard/kernel.nit:237 */
     REGB1 = TAG_Bool((REGB0)==(REGB1));
     /* ../lib/standard/collection/array.nit:26 */
     REGB2 = REGB1;
@@ -59,6 +61,7 @@ val_t standard___collection___array___AbstractArrayRead___is_empty(val_t p0){
   stack_frame_head = fra.me.prev;
   return REGB2;
 }
+static const char LOCATE_standard___collection___array___AbstractArrayRead___has[] = "array::AbstractArrayRead::(abstract_collection::Collection::has)";
 val_t standard___collection___array___AbstractArrayRead___has(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -94,7 +97,7 @@ val_t standard___collection___array___AbstractArrayRead___has(val_t p0, val_t p1
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:242 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
     /* ../lib/standard/collection/array.nit:32 */
     if (UNTAG_Bool(REGB2)) {
@@ -105,7 +108,7 @@ val_t standard___collection___array___AbstractArrayRead___has(val_t p0, val_t p1
       } else {
         REGB3 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
         if (UNTAG_Bool(REGB3)) {
-          REGB3 = TAG_Bool(false);
+          REGB3 = TAG_Bool(0);
           REGB2 = REGB3;
         } else {
           REGB3 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
@@ -113,12 +116,12 @@ val_t standard___collection___array___AbstractArrayRead___has(val_t p0, val_t p1
         }
       }
       if (UNTAG_Bool(REGB2)) {
-        REGB2 = TAG_Bool(true);
+        REGB2 = TAG_Bool(1);
         goto label1;
       }
       /* ../lib/standard/collection/array.nit:34 */
       REGB3 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:245 */
       REGB3 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB3));
       /* ../lib/standard/collection/array.nit:34 */
       REGB0 = REGB3;
@@ -129,13 +132,14 @@ val_t standard___collection___array___AbstractArrayRead___has(val_t p0, val_t p1
   }
   label2: while(0);
   /* ../lib/standard/collection/array.nit:36 */
-  REGB0 = TAG_Bool(false);
+  REGB0 = TAG_Bool(0);
   REGB2 = REGB0;
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return REGB2;
 }
+static const char LOCATE_standard___collection___array___AbstractArrayRead___has_only[] = "array::AbstractArrayRead::(abstract_collection::Collection::has_only)";
 val_t standard___collection___array___AbstractArrayRead___has_only(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -171,7 +175,7 @@ val_t standard___collection___array___AbstractArrayRead___has_only(val_t p0, val
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:242 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
     /* ../lib/standard/collection/array.nit:43 */
     if (UNTAG_Bool(REGB2)) {
@@ -182,7 +186,7 @@ val_t standard___collection___array___AbstractArrayRead___has_only(val_t p0, val
       } else {
         REGB3 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
         if (UNTAG_Bool(REGB3)) {
-          REGB3 = TAG_Bool(false);
+          REGB3 = TAG_Bool(0);
           REGB2 = REGB3;
         } else {
           REGB3 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
@@ -191,12 +195,12 @@ val_t standard___collection___array___AbstractArrayRead___has_only(val_t p0, val
       }
       REGB2 = TAG_Bool(!UNTAG_Bool(REGB2));
       if (UNTAG_Bool(REGB2)) {
-        REGB2 = TAG_Bool(false);
+        REGB2 = TAG_Bool(0);
         goto label1;
       }
       /* ../lib/standard/collection/array.nit:45 */
       REGB3 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:245 */
       REGB3 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB3));
       /* ../lib/standard/collection/array.nit:45 */
       REGB0 = REGB3;
@@ -207,13 +211,14 @@ val_t standard___collection___array___AbstractArrayRead___has_only(val_t p0, val
   }
   label2: while(0);
   /* ../lib/standard/collection/array.nit:47 */
-  REGB0 = TAG_Bool(true);
+  REGB0 = TAG_Bool(1);
   REGB2 = REGB0;
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return REGB2;
 }
+static const char LOCATE_standard___collection___array___AbstractArrayRead___count[] = "array::AbstractArrayRead::(abstract_collection::Collection::count)";
 val_t standard___collection___array___AbstractArrayRead___count(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -252,7 +257,7 @@ val_t standard___collection___array___AbstractArrayRead___count(val_t p0, val_t
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:242 */
     REGB3 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB2));
     /* ../lib/standard/collection/array.nit:55 */
     if (UNTAG_Bool(REGB3)) {
@@ -263,7 +268,7 @@ val_t standard___collection___array___AbstractArrayRead___count(val_t p0, val_t
       } else {
         REGB4 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
         if (UNTAG_Bool(REGB4)) {
-          REGB4 = TAG_Bool(false);
+          REGB4 = TAG_Bool(0);
           REGB3 = REGB4;
         } else {
           REGB4 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
@@ -272,14 +277,14 @@ val_t standard___collection___array___AbstractArrayRead___count(val_t p0, val_t
       }
       if (UNTAG_Bool(REGB3)) {
         REGB3 = TAG_Int(1);
-        /* ../lib/standard/kernel.nit:235 */
+        /* ../lib/standard/kernel.nit:245 */
         REGB3 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB3));
         /* ../lib/standard/collection/array.nit:56 */
         REGB0 = REGB3;
       }
       /* ../lib/standard/collection/array.nit:57 */
       REGB3 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:245 */
       REGB3 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB3));
       /* ../lib/standard/collection/array.nit:57 */
       REGB1 = REGB3;
@@ -295,6 +300,7 @@ val_t standard___collection___array___AbstractArrayRead___count(val_t p0, val_t
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___array___AbstractArrayRead___index_of[] = "array::AbstractArrayRead::(abstract_collection::SequenceRead::index_of)";
 val_t standard___collection___array___AbstractArrayRead___index_of(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -318,6 +324,7 @@ val_t standard___collection___array___AbstractArrayRead___index_of(val_t p0, val
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___array___AbstractArrayRead___last_index_of[] = "array::AbstractArrayRead::last_index_of";
 val_t standard___collection___array___AbstractArrayRead___last_index_of(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -343,7 +350,7 @@ val_t standard___collection___array___AbstractArrayRead___last_index_of(val_t p0
   REGB0 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
   /* ../lib/standard/collection/array.nit:66 */
   REGB1 = TAG_Int(1);
-  /* ../lib/standard/kernel.nit:237 */
+  /* ../lib/standard/kernel.nit:247 */
   REGB1 = TAG_Int(UNTAG_Int(REGB0)-UNTAG_Int(REGB1));
   /* ../lib/standard/collection/array.nit:66 */
   REGB1 = CALL_standard___collection___array___AbstractArrayRead___last_index_of_from(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1], REGB1);
@@ -352,6 +359,7 @@ val_t standard___collection___array___AbstractArrayRead___last_index_of(val_t p0
   stack_frame_head = fra.me.prev;
   return REGB1;
 }
+static const char LOCATE_standard___collection___array___AbstractArrayRead___index_of_from[] = "array::AbstractArrayRead::index_of_from";
 val_t standard___collection___array___AbstractArrayRead___index_of_from(val_t p0, val_t p1, val_t p2){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -386,7 +394,7 @@ val_t standard___collection___array___AbstractArrayRead___index_of_from(val_t p0
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:242 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
     /* ../lib/standard/collection/array.nit:74 */
     if (UNTAG_Bool(REGB2)) {
@@ -397,7 +405,7 @@ val_t standard___collection___array___AbstractArrayRead___index_of_from(val_t p0
       } else {
         REGB3 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
         if (UNTAG_Bool(REGB3)) {
-          REGB3 = TAG_Bool(false);
+          REGB3 = TAG_Bool(0);
           REGB2 = REGB3;
         } else {
           REGB3 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
@@ -411,7 +419,7 @@ val_t standard___collection___array___AbstractArrayRead___index_of_from(val_t p0
       }
       /* ../lib/standard/collection/array.nit:78 */
       REGB3 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:245 */
       REGB3 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB3));
       /* ../lib/standard/collection/array.nit:78 */
       REGB0 = REGB3;
@@ -423,7 +431,7 @@ val_t standard___collection___array___AbstractArrayRead___index_of_from(val_t p0
   label2: while(0);
   /* ../lib/standard/collection/array.nit:80 */
   REGB0 = TAG_Int(1);
-  /* ../lib/standard/kernel.nit:236 */
+  /* ../lib/standard/kernel.nit:246 */
   REGB0 = TAG_Int(-UNTAG_Int(REGB0));
   /* ../lib/standard/collection/array.nit:80 */
   REGB2 = REGB0;
@@ -432,6 +440,7 @@ val_t standard___collection___array___AbstractArrayRead___index_of_from(val_t p0
   stack_frame_head = fra.me.prev;
   return REGB2;
 }
+static const char LOCATE_standard___collection___array___AbstractArrayRead___last_index_of_from[] = "array::AbstractArrayRead::last_index_of_from";
 val_t standard___collection___array___AbstractArrayRead___last_index_of_from(val_t p0, val_t p1, val_t p2){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -459,7 +468,7 @@ val_t standard___collection___array___AbstractArrayRead___last_index_of_from(val
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:233 */
+    /* ../lib/standard/kernel.nit:243 */
     REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
     /* ../lib/standard/collection/array.nit:88 */
     if (UNTAG_Bool(REGB1)) {
@@ -470,7 +479,7 @@ val_t standard___collection___array___AbstractArrayRead___last_index_of_from(val
       } else {
         REGB2 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
         if (UNTAG_Bool(REGB2)) {
-          REGB2 = TAG_Bool(false);
+          REGB2 = TAG_Bool(0);
           REGB1 = REGB2;
         } else {
           REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
@@ -484,7 +493,7 @@ val_t standard___collection___array___AbstractArrayRead___last_index_of_from(val
       } else {
         /* ../lib/standard/collection/array.nit:92 */
         REGB2 = TAG_Int(1);
-        /* ../lib/standard/kernel.nit:237 */
+        /* ../lib/standard/kernel.nit:247 */
         REGB2 = TAG_Int(UNTAG_Int(REGB0)-UNTAG_Int(REGB2));
         /* ../lib/standard/collection/array.nit:92 */
         REGB0 = REGB2;
@@ -497,7 +506,7 @@ val_t standard___collection___array___AbstractArrayRead___last_index_of_from(val
   label2: while(0);
   /* ../lib/standard/collection/array.nit:95 */
   REGB0 = TAG_Int(1);
-  /* ../lib/standard/kernel.nit:236 */
+  /* ../lib/standard/kernel.nit:246 */
   REGB0 = TAG_Int(-UNTAG_Int(REGB0));
   /* ../lib/standard/collection/array.nit:95 */
   REGB1 = REGB0;
@@ -506,6 +515,7 @@ val_t standard___collection___array___AbstractArrayRead___last_index_of_from(val
   stack_frame_head = fra.me.prev;
   return REGB1;
 }
+static const char LOCATE_standard___collection___array___AbstractArrayRead___reversed[] = "array::AbstractArrayRead::reversed";
 val_t standard___collection___array___AbstractArrayRead___reversed(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -540,13 +550,13 @@ val_t standard___collection___array___AbstractArrayRead___reversed(val_t p0){
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:234 */
+    /* ../lib/standard/kernel.nit:244 */
     REGB1 = TAG_Bool(UNTAG_Int(REGB0)>UNTAG_Int(REGB1));
     /* ../lib/standard/collection/array.nit:105 */
     if (UNTAG_Bool(REGB1)) {
       /* ../lib/standard/collection/array.nit:106 */
       REGB1 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:237 */
+      /* ../lib/standard/kernel.nit:247 */
       REGB1 = TAG_Int(UNTAG_Int(REGB0)-UNTAG_Int(REGB1));
       /* ../lib/standard/collection/array.nit:106 */
       REGB0 = REGB1;
@@ -565,6 +575,7 @@ val_t standard___collection___array___AbstractArrayRead___reversed(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_standard___collection___array___AbstractArrayRead___copy_to[] = "array::AbstractArrayRead::copy_to";
 void standard___collection___array___AbstractArrayRead___copy_to(val_t p0, val_t p1, val_t p2, val_t p3, val_t p4){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -596,17 +607,17 @@ void standard___collection___array___AbstractArrayRead___copy_to(val_t p0, val_t
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:234 */
+    /* ../lib/standard/kernel.nit:244 */
     REGB3 = TAG_Bool(UNTAG_Int(REGB1)>UNTAG_Int(REGB3));
     /* ../lib/standard/collection/array.nit:122 */
     if (UNTAG_Bool(REGB3)) {
       /* ../lib/standard/collection/array.nit:123 */
       REGB3 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:237 */
+      /* ../lib/standard/kernel.nit:247 */
       REGB3 = TAG_Int(UNTAG_Int(REGB1)-UNTAG_Int(REGB3));
       /* ../lib/standard/collection/array.nit:123 */
       REGB1 = REGB3;
-      /* ../lib/standard/kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:245 */
       REGB3 = TAG_Int(UNTAG_Int(REGB2)+UNTAG_Int(REGB1));
       REGB4 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
       /* ../lib/standard/collection/array.nit:124 */
@@ -621,6 +632,7 @@ void standard___collection___array___AbstractArrayRead___copy_to(val_t p0, val_t
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___AbstractArrayRead___output[] = "array::AbstractArrayRead::(kernel::Object::output)";
 void standard___collection___array___AbstractArrayRead___output(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -654,7 +666,7 @@ void standard___collection___array___AbstractArrayRead___output(val_t p0){
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:242 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
     /* ../lib/standard/collection/array.nit:132 */
     if (UNTAG_Bool(REGB2)) {
@@ -666,7 +678,7 @@ void standard___collection___array___AbstractArrayRead___output(val_t p0){
       } else {
         REGB3 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
         if (UNTAG_Bool(REGB3)) {
-          REGB3 = TAG_Bool(false);
+          REGB3 = TAG_Bool(0);
           REGB2 = REGB3;
         } else {
           REGB3 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[1])(fra.me.REG[1], NIT_NULL);
@@ -683,7 +695,7 @@ void standard___collection___array___AbstractArrayRead___output(val_t p0){
       }
       /* ../lib/standard/collection/array.nit:135 */
       REGB2 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:245 */
       REGB2 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB2));
       /* ../lib/standard/collection/array.nit:135 */
       REGB0 = REGB2;
@@ -696,6 +708,7 @@ void standard___collection___array___AbstractArrayRead___output(val_t p0){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___AbstractArrayRead___iterator[] = "array::AbstractArrayRead::(abstract_collection::Collection::iterator)";
 val_t standard___collection___array___AbstractArrayRead___iterator(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
@@ -715,6 +728,7 @@ val_t standard___collection___array___AbstractArrayRead___iterator(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___array___AbstractArrayRead_____eqeq[] = "array::AbstractArrayRead::(kernel::Object::==)";
 val_t standard___collection___array___AbstractArrayRead_____eqeq(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -737,16 +751,16 @@ val_t standard___collection___array___AbstractArrayRead_____eqeq(val_t p0, val_t
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   /* ../lib/standard/collection/array.nit:144 */
-  REGB0 = TAG_Bool((fra.me.REG[1]!=NIT_NULL) && VAL_ISA(fra.me.REG[1], COLOR_standard___collection___array___AbstractArray, ID_standard___collection___array___AbstractArray)) /*cast AbstractArray[E]*/;
+  REGB0 = TAG_Bool((fra.me.REG[1]!=NIT_NULL) && VAL_ISA(fra.me.REG[1], COLOR_standard___collection___array___AbstractArray, ID_standard___collection___array___AbstractArray)) /*cast AbstractArray[nullable Object]*/;
   REGB0 = TAG_Bool(!UNTAG_Bool(REGB0));
   if (UNTAG_Bool(REGB0)) {
-    REGB0 = TAG_Bool(true);
+    REGB0 = TAG_Bool(1);
   } else {
     REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
     REGB0 = REGB1;
   }
   if (UNTAG_Bool(REGB0)) {
-    REGB0 = TAG_Bool(false);
+    REGB0 = TAG_Bool(0);
     goto label1;
   }
   /* ../lib/standard/collection/array.nit:24 */
@@ -772,14 +786,14 @@ val_t standard___collection___array___AbstractArrayRead_____eqeq(val_t p0, val_t
   REGB3 = TAG_Bool(IS_EQUAL_OO(REGB2,REGB1));
   if (UNTAG_Bool(REGB3)) {
   } else {
-    /* ../lib/standard/kernel.nit:227 */
+    /* ../lib/standard/kernel.nit:237 */
     REGB2 = TAG_Bool((REGB2)==(REGB1));
     /* ../lib/standard/collection/array.nit:146 */
     REGB3 = REGB2;
   }
   REGB3 = TAG_Bool(!UNTAG_Bool(REGB3));
   if (UNTAG_Bool(REGB3)) {
-    REGB3 = TAG_Bool(false);
+    REGB3 = TAG_Bool(0);
     REGB0 = REGB3;
     goto label1;
   }
@@ -792,7 +806,7 @@ val_t standard___collection___array___AbstractArrayRead_____eqeq(val_t p0, val_t
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:242 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB3)<UNTAG_Int(REGB1));
     /* ../lib/standard/collection/array.nit:148 */
     if (UNTAG_Bool(REGB2)) {
@@ -808,7 +822,7 @@ val_t standard___collection___array___AbstractArrayRead_____eqeq(val_t p0, val_t
       } else {
         REGB4 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
         if (UNTAG_Bool(REGB4)) {
-          REGB4 = TAG_Bool(false);
+          REGB4 = TAG_Bool(0);
           REGB2 = REGB4;
         } else {
           REGB4 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[3]);
@@ -817,13 +831,13 @@ val_t standard___collection___array___AbstractArrayRead_____eqeq(val_t p0, val_t
       }
       REGB2 = TAG_Bool(!UNTAG_Bool(REGB2));
       if (UNTAG_Bool(REGB2)) {
-        REGB2 = TAG_Bool(false);
+        REGB2 = TAG_Bool(0);
         REGB0 = REGB2;
         goto label1;
       }
       /* ../lib/standard/collection/array.nit:150 */
       REGB2 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:245 */
       REGB2 = TAG_Int(UNTAG_Int(REGB3)+UNTAG_Int(REGB2));
       /* ../lib/standard/collection/array.nit:150 */
       REGB3 = REGB2;
@@ -834,13 +848,14 @@ val_t standard___collection___array___AbstractArrayRead_____eqeq(val_t p0, val_t
   }
   label2: while(0);
   /* ../lib/standard/collection/array.nit:152 */
-  REGB3 = TAG_Bool(true);
+  REGB3 = TAG_Bool(1);
   REGB0 = REGB3;
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___array___AbstractArrayRead___init[] = "array::AbstractArrayRead::init";
 void standard___collection___array___AbstractArrayRead___init(val_t p0, int* init_table){
   int itpos0 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___AbstractArrayRead].i;
   struct {struct stack_frame_t me;} fra;
@@ -857,6 +872,7 @@ void standard___collection___array___AbstractArrayRead___init(val_t p0, int* ini
   init_table[itpos0] = 1;
   return;
 }
+static const char LOCATE_standard___collection___array___AbstractArray___enlarge[] = "array::AbstractArray::enlarge";
 void standard___collection___array___AbstractArray___enlarge(val_t p0, val_t p1){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
@@ -872,6 +888,7 @@ void standard___collection___array___AbstractArray___enlarge(val_t p0, val_t p1)
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___AbstractArray___push[] = "array::AbstractArray::(abstract_collection::Sequence::push)";
 void standard___collection___array___AbstractArray___push(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
@@ -891,6 +908,7 @@ void standard___collection___array___AbstractArray___push(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___AbstractArray___pop[] = "array::AbstractArray::(abstract_collection::Sequence::pop)";
 val_t standard___collection___array___AbstractArray___pop(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -918,7 +936,7 @@ val_t standard___collection___array___AbstractArray___pop(val_t p0){
   /* ../lib/standard/collection/array.nit:172 */
   REGB0 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
   REGB1 = TAG_Int(1);
-  /* ../lib/standard/kernel.nit:237 */
+  /* ../lib/standard/kernel.nit:247 */
   REGB1 = TAG_Int(UNTAG_Int(REGB0)-UNTAG_Int(REGB1));
   /* ../lib/standard/collection/array.nit:172 */
   ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]) = REGB1;
@@ -928,6 +946,7 @@ val_t standard___collection___array___AbstractArray___pop(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_standard___collection___array___AbstractArray___shift[] = "array::AbstractArray::(abstract_collection::Sequence::shift)";
 val_t standard___collection___array___AbstractArray___shift(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -970,20 +989,20 @@ val_t standard___collection___array___AbstractArray___shift(val_t p0){
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:242 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
     /* ../lib/standard/collection/array.nit:182 */
     if (UNTAG_Bool(REGB2)) {
       /* ../lib/standard/collection/array.nit:183 */
       REGB2 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:237 */
+      /* ../lib/standard/kernel.nit:247 */
       REGB2 = TAG_Int(UNTAG_Int(REGB0)-UNTAG_Int(REGB2));
       /* ../lib/standard/collection/array.nit:183 */
       fra.me.REG[2] = CALL_standard___collection___abstract_collection___SequenceRead_____bra(fra.me.REG[0])(fra.me.REG[0], REGB0);
       CALL_standard___collection___abstract_collection___Sequence_____braeq(fra.me.REG[0])(fra.me.REG[0], REGB2, fra.me.REG[2]);
       /* ../lib/standard/collection/array.nit:184 */
       REGB2 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:245 */
       REGB2 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB2));
       /* ../lib/standard/collection/array.nit:184 */
       REGB0 = REGB2;
@@ -995,7 +1014,7 @@ val_t standard___collection___array___AbstractArray___shift(val_t p0){
   label1: while(0);
   /* ../lib/standard/collection/array.nit:186 */
   REGB0 = TAG_Int(1);
-  /* ../lib/standard/kernel.nit:237 */
+  /* ../lib/standard/kernel.nit:247 */
   REGB0 = TAG_Int(UNTAG_Int(REGB1)-UNTAG_Int(REGB0));
   /* ../lib/standard/collection/array.nit:186 */
   ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]) = REGB0;
@@ -1005,6 +1024,7 @@ val_t standard___collection___array___AbstractArray___shift(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_standard___collection___array___AbstractArray___unshift[] = "array::AbstractArray::(abstract_collection::Sequence::unshift)";
 void standard___collection___array___AbstractArray___unshift(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -1032,7 +1052,7 @@ void standard___collection___array___AbstractArray___unshift(val_t p0, val_t p1)
   REGB0 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
   /* ../lib/standard/collection/array.nit:192 */
   REGB1 = TAG_Int(1);
-  /* ../lib/standard/kernel.nit:237 */
+  /* ../lib/standard/kernel.nit:247 */
   REGB1 = TAG_Int(UNTAG_Int(REGB0)-UNTAG_Int(REGB1));
   /* ../lib/standard/collection/array.nit:193 */
   while(1) {
@@ -1042,20 +1062,20 @@ void standard___collection___array___AbstractArray___unshift(val_t p0, val_t p1)
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:234 */
+    /* ../lib/standard/kernel.nit:244 */
     REGB0 = TAG_Bool(UNTAG_Int(REGB1)>UNTAG_Int(REGB0));
     /* ../lib/standard/collection/array.nit:193 */
     if (UNTAG_Bool(REGB0)) {
       /* ../lib/standard/collection/array.nit:194 */
       REGB0 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:245 */
       REGB0 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB0));
       /* ../lib/standard/collection/array.nit:194 */
       fra.me.REG[2] = CALL_standard___collection___abstract_collection___SequenceRead_____bra(fra.me.REG[0])(fra.me.REG[0], REGB1);
       CALL_standard___collection___abstract_collection___Sequence_____braeq(fra.me.REG[0])(fra.me.REG[0], REGB0, fra.me.REG[2]);
       /* ../lib/standard/collection/array.nit:195 */
       REGB0 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:237 */
+      /* ../lib/standard/kernel.nit:247 */
       REGB0 = TAG_Int(UNTAG_Int(REGB1)-UNTAG_Int(REGB0));
       /* ../lib/standard/collection/array.nit:195 */
       REGB1 = REGB0;
@@ -1071,6 +1091,7 @@ void standard___collection___array___AbstractArray___unshift(val_t p0, val_t p1)
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___AbstractArray___insert[] = "array::AbstractArray::insert";
 void standard___collection___array___AbstractArray___insert(val_t p0, val_t p1, val_t p2){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -1098,7 +1119,7 @@ void standard___collection___array___AbstractArray___insert(val_t p0, val_t p1,
   REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
   /* ../lib/standard/collection/array.nit:207 */
   REGB2 = TAG_Int(1);
-  /* ../lib/standard/kernel.nit:235 */
+  /* ../lib/standard/kernel.nit:245 */
   REGB2 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB2));
   /* ../lib/standard/collection/array.nit:207 */
   CALL_standard___collection___array___AbstractArray___enlarge(fra.me.REG[0])(fra.me.REG[0], REGB2);
@@ -1109,11 +1130,11 @@ void standard___collection___array___AbstractArray___insert(val_t p0, val_t p1,
     nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
   }
   REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
-  /* ../lib/standard/kernel.nit:237 */
+  /* ../lib/standard/kernel.nit:247 */
   REGB2 = TAG_Int(UNTAG_Int(REGB2)-UNTAG_Int(REGB0));
   /* ../lib/standard/collection/array.nit:208 */
   REGB1 = TAG_Int(1);
-  /* ../lib/standard/kernel.nit:235 */
+  /* ../lib/standard/kernel.nit:245 */
   REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
   /* ../lib/standard/collection/array.nit:208 */
   CALL_standard___collection___array___AbstractArrayRead___copy_to(fra.me.REG[0])(fra.me.REG[0], REGB0, REGB2, fra.me.REG[0], REGB1);
@@ -1122,6 +1143,7 @@ void standard___collection___array___AbstractArray___insert(val_t p0, val_t p1,
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___AbstractArray___add[] = "array::AbstractArray::(abstract_collection::SimpleCollection::add)";
 void standard___collection___array___AbstractArray___add(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -1149,6 +1171,7 @@ void standard___collection___array___AbstractArray___add(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___AbstractArray___clear[] = "array::AbstractArray::(abstract_collection::RemovableCollection::clear)";
 void standard___collection___array___AbstractArray___clear(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -1168,6 +1191,7 @@ void standard___collection___array___AbstractArray___clear(val_t p0){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___AbstractArray___remove[] = "array::AbstractArray::(abstract_collection::RemovableCollection::remove)";
 void standard___collection___array___AbstractArray___remove(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -1189,6 +1213,7 @@ void standard___collection___array___AbstractArray___remove(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___AbstractArray___remove_all[] = "array::AbstractArray::(abstract_collection::RemovableCollection::remove_all)";
 void standard___collection___array___AbstractArray___remove_all(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -1216,7 +1241,7 @@ void standard___collection___array___AbstractArray___remove_all(val_t p0, val_t
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:233 */
+    /* ../lib/standard/kernel.nit:243 */
     REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
     /* ../lib/standard/collection/array.nit:221 */
     if (UNTAG_Bool(REGB1)) {
@@ -1234,6 +1259,7 @@ void standard___collection___array___AbstractArray___remove_all(val_t p0, val_t
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___AbstractArray___remove_at[] = "array::AbstractArray::(abstract_collection::Sequence::remove_at)";
 void standard___collection___array___AbstractArray___remove_at(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -1266,7 +1292,7 @@ void standard___collection___array___AbstractArray___remove_at(val_t p0, val_t p
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:233 */
+  /* ../lib/standard/kernel.nit:243 */
   REGB2 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB2));
   /* ../lib/standard/collection/array.nit:230 */
   if (UNTAG_Bool(REGB2)) {
@@ -1275,17 +1301,17 @@ void standard___collection___array___AbstractArray___remove_at(val_t p0, val_t p
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:242 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
   } else {
     /* ../lib/standard/collection/array.nit:230 */
-    REGB3 = TAG_Bool(false);
+    REGB3 = TAG_Bool(0);
     REGB2 = REGB3;
   }
   if (UNTAG_Bool(REGB2)) {
     /* ../lib/standard/collection/array.nit:231 */
     REGB2 = TAG_Int(1);
-    /* ../lib/standard/kernel.nit:235 */
+    /* ../lib/standard/kernel.nit:245 */
     REGB2 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB2));
     /* ../lib/standard/collection/array.nit:232 */
     while(1) {
@@ -1294,20 +1320,20 @@ void standard___collection___array___AbstractArray___remove_at(val_t p0, val_t p
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ../lib/standard/kernel.nit:232 */
+      /* ../lib/standard/kernel.nit:242 */
       REGB0 = TAG_Bool(UNTAG_Int(REGB2)<UNTAG_Int(REGB1));
       /* ../lib/standard/collection/array.nit:232 */
       if (UNTAG_Bool(REGB0)) {
         /* ../lib/standard/collection/array.nit:233 */
         REGB0 = TAG_Int(1);
-        /* ../lib/standard/kernel.nit:237 */
+        /* ../lib/standard/kernel.nit:247 */
         REGB0 = TAG_Int(UNTAG_Int(REGB2)-UNTAG_Int(REGB0));
         /* ../lib/standard/collection/array.nit:233 */
         fra.me.REG[1] = CALL_standard___collection___abstract_collection___SequenceRead_____bra(fra.me.REG[0])(fra.me.REG[0], REGB2);
         CALL_standard___collection___abstract_collection___Sequence_____braeq(fra.me.REG[0])(fra.me.REG[0], REGB0, fra.me.REG[1]);
         /* ../lib/standard/collection/array.nit:234 */
         REGB0 = TAG_Int(1);
-        /* ../lib/standard/kernel.nit:235 */
+        /* ../lib/standard/kernel.nit:245 */
         REGB0 = TAG_Int(UNTAG_Int(REGB2)+UNTAG_Int(REGB0));
         /* ../lib/standard/collection/array.nit:234 */
         REGB2 = REGB0;
@@ -1319,7 +1345,7 @@ void standard___collection___array___AbstractArray___remove_at(val_t p0, val_t p
     label1: while(0);
     /* ../lib/standard/collection/array.nit:236 */
     REGB2 = TAG_Int(1);
-    /* ../lib/standard/kernel.nit:237 */
+    /* ../lib/standard/kernel.nit:247 */
     REGB2 = TAG_Int(UNTAG_Int(REGB1)-UNTAG_Int(REGB2));
     /* ../lib/standard/collection/array.nit:236 */
     ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]) = REGB2;
@@ -1327,8 +1353,9 @@ void standard___collection___array___AbstractArray___remove_at(val_t p0, val_t p
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___AbstractArray___swap_at[] = "array::AbstractArray::swap_at";
 void standard___collection___array___AbstractArray___swap_at(val_t p0, val_t p1, val_t p2){
-  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
+  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
   val_t REGB1;
   val_t tmp;
@@ -1337,22 +1364,25 @@ void standard___collection___array___AbstractArray___swap_at(val_t p0, val_t p1,
   fra.me.line = 240;
   fra.me.meth = LOCATE_standard___collection___array___AbstractArray___swap_at;
   fra.me.has_broke = 0;
-  fra.me.REG_size = 2;
+  fra.me.REG_size = 3;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
+  fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   REGB0 = p1;
   REGB1 = p2;
   /* ../lib/standard/collection/array.nit:247 */
   fra.me.REG[1] = CALL_standard___collection___abstract_collection___SequenceRead_____bra(fra.me.REG[0])(fra.me.REG[0], REGB0);
   /* ../lib/standard/collection/array.nit:248 */
-  CALL_standard___collection___abstract_collection___Sequence_____braeq(fra.me.REG[0])(fra.me.REG[0], REGB0, REGB1);
+  fra.me.REG[2] = CALL_standard___collection___abstract_collection___SequenceRead_____bra(fra.me.REG[0])(fra.me.REG[0], REGB1);
+  CALL_standard___collection___abstract_collection___Sequence_____braeq(fra.me.REG[0])(fra.me.REG[0], REGB0, fra.me.REG[2]);
   /* ../lib/standard/collection/array.nit:249 */
   CALL_standard___collection___abstract_collection___Sequence_____braeq(fra.me.REG[0])(fra.me.REG[0], REGB1, fra.me.REG[1]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___Array___iterate[] = "array::Array::(abstract_collection::Collection::iterate)";
 void standard___collection___array___Array___iterate(val_t p0, struct stack_frame_t *closctx_param, fun_t clos_fun0){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -1362,7 +1392,7 @@ void standard___collection___array___Array___iterate(val_t p0, struct stack_fram
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 266;
+  fra.me.line = 267;
   fra.me.meth = LOCATE_standard___collection___array___Array___iterate;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
@@ -1374,18 +1404,18 @@ void standard___collection___array___Array___iterate(val_t p0, struct stack_fram
   fra.me.closure_funs = CREG;
   fra.me.REG[0] = p0;
   CREG[0] = clos_fun0;
-  /* ../lib/standard/collection/array.nit:269 */
-  REGB0 = TAG_Int(0);
   /* ../lib/standard/collection/array.nit:270 */
+  REGB0 = TAG_Int(0);
+  /* ../lib/standard/collection/array.nit:271 */
   REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
+    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 271);
   }
   REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
-  /* ../lib/standard/collection/array.nit:271 */
-  fra.me.REG[1] = ATTR_standard___collection___array___Array____items(fra.me.REG[0]);
   /* ../lib/standard/collection/array.nit:272 */
+  fra.me.REG[1] = ATTR_standard___collection___array___Array____items(fra.me.REG[0]);
+  /* ../lib/standard/collection/array.nit:273 */
   while(1) {
     /* ../lib/standard/collection/array.nit:24 */
     REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0])!=NIT_NULL);
@@ -1399,30 +1429,30 @@ void standard___collection___array___Array___iterate(val_t p0, struct stack_fram
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:242 */
     REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-    /* ../lib/standard/collection/array.nit:272 */
+    /* ../lib/standard/collection/array.nit:273 */
     if (UNTAG_Bool(REGB1)) {
-      /* ../lib/standard/collection/array.nit:273 */
+      /* ../lib/standard/collection/array.nit:274 */
       REGB1 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
+        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 274);
       }
-      /* ../lib/standard/collection/array.nit:718 */
+      /* ../lib/standard/collection/array.nit:725 */
       fra.me.REG[2] = ((Nit_NativeArray)fra.me.REG[1])->val[UNTAG_Int(REGB0)];
-      /* ../lib/standard/collection/array.nit:273 */
+      /* ../lib/standard/collection/array.nit:274 */
       ((void (*)(struct stack_frame_t *, val_t))(CREG[0]))(closctx_param, fra.me.REG[2]);
       if (closctx_param->has_broke) {
         goto label1;
       }
-      /* ../lib/standard/collection/array.nit:274 */
+      /* ../lib/standard/collection/array.nit:275 */
       REGB1 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:245 */
       REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-      /* ../lib/standard/collection/array.nit:274 */
+      /* ../lib/standard/collection/array.nit:275 */
       REGB0 = REGB1;
     } else {
-      /* ../lib/standard/collection/array.nit:272 */
+      /* ../lib/standard/collection/array.nit:273 */
       goto label2;
     }
   }
@@ -1431,6 +1461,7 @@ void standard___collection___array___Array___iterate(val_t p0, struct stack_fram
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___Array_____bra[] = "array::Array::(abstract_collection::SequenceRead::[])";
 val_t standard___collection___array___Array_____bra(val_t p0, val_t p1){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -1439,7 +1470,7 @@ val_t standard___collection___array___Array_____bra(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 278;
+  fra.me.line = 279;
   fra.me.meth = LOCATE_standard___collection___array___Array_____bra;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
@@ -1447,21 +1478,21 @@ val_t standard___collection___array___Array_____bra(val_t p0, val_t p1){
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
   REGB0 = p1;
-  /* ../lib/standard/collection/array.nit:280 */
+  /* ../lib/standard/collection/array.nit:281 */
   REGB1 = TAG_Int(0);
   REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
   if (UNTAG_Bool(REGB2)) {
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:233 */
+  /* ../lib/standard/kernel.nit:243 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:280 */
+  /* ../lib/standard/collection/array.nit:281 */
   if (UNTAG_Bool(REGB1)) {
     REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0])!=NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
+      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 281);
     }
     REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
     REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
@@ -1469,31 +1500,32 @@ val_t standard___collection___array___Array_____bra(val_t p0, val_t p1){
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:242 */
     REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
   } else {
-    /* ../lib/standard/collection/array.nit:280 */
-    REGB2 = TAG_Bool(false);
+    /* ../lib/standard/collection/array.nit:281 */
+    REGB2 = TAG_Bool(0);
     REGB1 = REGB2;
   }
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
+    nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
   }
-  /* ../lib/standard/collection/array.nit:281 */
+  /* ../lib/standard/collection/array.nit:282 */
   fra.me.REG[0] = ATTR_standard___collection___array___Array____items(fra.me.REG[0]);
   REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
-    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
+    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
   }
-  /* ../lib/standard/collection/array.nit:718 */
+  /* ../lib/standard/collection/array.nit:725 */
   fra.me.REG[0] = ((Nit_NativeArray)fra.me.REG[0])->val[UNTAG_Int(REGB0)];
-  /* ../lib/standard/collection/array.nit:281 */
+  /* ../lib/standard/collection/array.nit:282 */
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___array___Array_____braeq[] = "array::Array::(abstract_collection::Sequence::[]=)";
 void standard___collection___array___Array_____braeq(val_t p0, val_t p1, val_t p2){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -1502,7 +1534,7 @@ void standard___collection___array___Array_____braeq(val_t p0, val_t p1, val_t p
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 284;
+  fra.me.line = 285;
   fra.me.meth = LOCATE_standard___collection___array___Array_____braeq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -1512,47 +1544,47 @@ void standard___collection___array___Array_____braeq(val_t p0, val_t p1, val_t p
   fra.me.REG[0] = p0;
   REGB0 = p1;
   fra.me.REG[1] = p2;
-  /* ../lib/standard/collection/array.nit:286 */
+  /* ../lib/standard/collection/array.nit:287 */
   REGB1 = TAG_Int(0);
   REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
   if (UNTAG_Bool(REGB2)) {
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:233 */
+  /* ../lib/standard/kernel.nit:243 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:286 */
+  /* ../lib/standard/collection/array.nit:287 */
   if (UNTAG_Bool(REGB1)) {
     REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0])!=NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 286);
+      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 287);
     }
     REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
     REGB2 = TAG_Int(1);
-    /* ../lib/standard/kernel.nit:235 */
+    /* ../lib/standard/kernel.nit:245 */
     REGB2 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB2));
     REGB1 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
     if (UNTAG_Bool(REGB1)) {
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:242 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB2));
   } else {
-    /* ../lib/standard/collection/array.nit:286 */
-    REGB1 = TAG_Bool(false);
+    /* ../lib/standard/collection/array.nit:287 */
+    REGB1 = TAG_Bool(0);
     REGB2 = REGB1;
   }
   if (UNTAG_Bool(REGB2)) {
   } else {
-    nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 286);
+    nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 287);
   }
-  /* ../lib/standard/collection/array.nit:287 */
+  /* ../lib/standard/collection/array.nit:288 */
   REGB2 = TAG_Bool(ATTR_standard___collection___array___Array____capacity(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB2)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___array, 287);
+    nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___array, 288);
   }
   REGB2 = ATTR_standard___collection___array___Array____capacity(fra.me.REG[0]);
   REGB1 = TAG_Bool(VAL_ISA(REGB0, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
@@ -1560,22 +1592,22 @@ void standard___collection___array___Array_____braeq(val_t p0, val_t p1, val_t p
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:231 */
+  /* ../lib/standard/kernel.nit:241 */
   REGB2 = TAG_Bool(UNTAG_Int(REGB2)<=UNTAG_Int(REGB0));
-  /* ../lib/standard/collection/array.nit:287 */
+  /* ../lib/standard/collection/array.nit:288 */
   if (UNTAG_Bool(REGB2)) {
-    /* ../lib/standard/collection/array.nit:288 */
+    /* ../lib/standard/collection/array.nit:289 */
     REGB2 = TAG_Int(1);
-    /* ../lib/standard/kernel.nit:235 */
+    /* ../lib/standard/kernel.nit:245 */
     REGB2 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB2));
-    /* ../lib/standard/collection/array.nit:288 */
+    /* ../lib/standard/collection/array.nit:289 */
     CALL_standard___collection___array___AbstractArray___enlarge(fra.me.REG[0])(fra.me.REG[0], REGB2);
   }
-  /* ../lib/standard/collection/array.nit:290 */
+  /* ../lib/standard/collection/array.nit:291 */
   REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB2)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 290);
+    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 291);
   }
   REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
   REGB1 = TAG_Bool(VAL_ISA(REGB0, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
@@ -1583,28 +1615,29 @@ void standard___collection___array___Array_____braeq(val_t p0, val_t p1, val_t p
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:231 */
+  /* ../lib/standard/kernel.nit:241 */
   REGB2 = TAG_Bool(UNTAG_Int(REGB2)<=UNTAG_Int(REGB0));
-  /* ../lib/standard/collection/array.nit:290 */
+  /* ../lib/standard/collection/array.nit:291 */
   if (UNTAG_Bool(REGB2)) {
-    /* ../lib/standard/collection/array.nit:291 */
+    /* ../lib/standard/collection/array.nit:292 */
     REGB2 = TAG_Int(1);
-    /* ../lib/standard/kernel.nit:235 */
+    /* ../lib/standard/kernel.nit:245 */
     REGB2 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB2));
-    /* ../lib/standard/collection/array.nit:291 */
+    /* ../lib/standard/collection/array.nit:292 */
     ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]) = REGB2;
   }
-  /* ../lib/standard/collection/array.nit:293 */
+  /* ../lib/standard/collection/array.nit:294 */
   fra.me.REG[0] = ATTR_standard___collection___array___Array____items(fra.me.REG[0]);
   REGB2 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
   if (UNTAG_Bool(REGB2)) {
-    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 293);
+    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 294);
   }
-  /* ../lib/standard/collection/array.nit:719 */
+  /* ../lib/standard/collection/array.nit:726 */
   ((Nit_NativeArray)fra.me.REG[0])->val[UNTAG_Int(REGB0)]=fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___Array___add[] = "array::Array::(abstract_collection::SimpleCollection::add)";
 void standard___collection___array___Array___add(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -1613,7 +1646,7 @@ void standard___collection___array___Array___add(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 296;
+  fra.me.line = 297;
   fra.me.meth = LOCATE_standard___collection___array___Array___add;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -1622,18 +1655,18 @@ void standard___collection___array___Array___add(val_t p0, val_t p1){
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:298 */
+  /* ../lib/standard/collection/array.nit:299 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 298);
+    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 299);
   }
   REGB0 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
-  /* ../lib/standard/collection/array.nit:299 */
+  /* ../lib/standard/collection/array.nit:300 */
   REGB1 = TAG_Bool(ATTR_standard___collection___array___Array____capacity(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___array, 299);
+    nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___array, 300);
   }
   REGB1 = ATTR_standard___collection___array___Array____capacity(fra.me.REG[0]);
   REGB2 = TAG_Bool(VAL_ISA(REGB0, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
@@ -1641,34 +1674,35 @@ void standard___collection___array___Array___add(val_t p0, val_t p1){
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:231 */
+  /* ../lib/standard/kernel.nit:241 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB1)<=UNTAG_Int(REGB0));
-  /* ../lib/standard/collection/array.nit:299 */
+  /* ../lib/standard/collection/array.nit:300 */
   if (UNTAG_Bool(REGB1)) {
-    /* ../lib/standard/collection/array.nit:300 */
+    /* ../lib/standard/collection/array.nit:301 */
     REGB1 = TAG_Int(1);
-    /* ../lib/standard/kernel.nit:235 */
+    /* ../lib/standard/kernel.nit:245 */
     REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-    /* ../lib/standard/collection/array.nit:300 */
+    /* ../lib/standard/collection/array.nit:301 */
     CALL_standard___collection___array___AbstractArray___enlarge(fra.me.REG[0])(fra.me.REG[0], REGB1);
   }
-  /* ../lib/standard/collection/array.nit:302 */
+  /* ../lib/standard/collection/array.nit:303 */
   REGB1 = TAG_Int(1);
-  /* ../lib/standard/kernel.nit:235 */
+  /* ../lib/standard/kernel.nit:245 */
   REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:302 */
-  ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]) = REGB1;
   /* ../lib/standard/collection/array.nit:303 */
+  ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]) = REGB1;
+  /* ../lib/standard/collection/array.nit:304 */
   fra.me.REG[0] = ATTR_standard___collection___array___Array____items(fra.me.REG[0]);
   REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
-    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 303);
+    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 304);
   }
-  /* ../lib/standard/collection/array.nit:719 */
+  /* ../lib/standard/collection/array.nit:726 */
   ((Nit_NativeArray)fra.me.REG[0])->val[UNTAG_Int(REGB0)]=fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___Array___enlarge[] = "array::Array::(array::AbstractArray::enlarge)";
 void standard___collection___array___Array___enlarge(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -1678,7 +1712,7 @@ void standard___collection___array___Array___enlarge(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 306;
+  fra.me.line = 307;
   fra.me.meth = LOCATE_standard___collection___array___Array___enlarge;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
@@ -1688,11 +1722,11 @@ void standard___collection___array___Array___enlarge(val_t p0, val_t p1){
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   REGB0 = p1;
-  /* ../lib/standard/collection/array.nit:308 */
+  /* ../lib/standard/collection/array.nit:309 */
   REGB1 = TAG_Bool(ATTR_standard___collection___array___Array____capacity(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___array, 308);
+    nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___array, 309);
   }
   REGB1 = ATTR_standard___collection___array___Array____capacity(fra.me.REG[0]);
   REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
@@ -1700,44 +1734,44 @@ void standard___collection___array___Array___enlarge(val_t p0, val_t p1){
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:231 */
+  /* ../lib/standard/kernel.nit:241 */
   REGB2 = TAG_Bool(UNTAG_Int(REGB0)<=UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:309 */
+  /* ../lib/standard/collection/array.nit:310 */
   if (UNTAG_Bool(REGB2)) {
     goto label1;
   }
-  /* ../lib/standard/collection/array.nit:310 */
+  /* ../lib/standard/collection/array.nit:311 */
   while(1) {
     REGB2 = TAG_Bool(VAL_ISA(REGB0, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
     if (UNTAG_Bool(REGB2)) {
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:231 */
+    /* ../lib/standard/kernel.nit:241 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB1)<=UNTAG_Int(REGB0));
-    /* ../lib/standard/collection/array.nit:310 */
+    /* ../lib/standard/collection/array.nit:311 */
     if (UNTAG_Bool(REGB2)) {
       REGB2 = TAG_Int(2);
-      /* ../lib/standard/kernel.nit:238 */
+      /* ../lib/standard/kernel.nit:248 */
       REGB2 = TAG_Int(UNTAG_Int(REGB1)*UNTAG_Int(REGB2));
-      /* ../lib/standard/collection/array.nit:310 */
+      /* ../lib/standard/collection/array.nit:311 */
       REGB3 = TAG_Int(2);
-      /* ../lib/standard/kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:245 */
       REGB3 = TAG_Int(UNTAG_Int(REGB2)+UNTAG_Int(REGB3));
-      /* ../lib/standard/collection/array.nit:310 */
+      /* ../lib/standard/collection/array.nit:311 */
       REGB1 = REGB3;
     } else {
       goto label2;
     }
   }
   label2: while(0);
-  /* ../lib/standard/collection/array.nit:712 */
+  /* ../lib/standard/collection/array.nit:719 */
   fra.me.REG[1] = NEW_NativeArray(UNTAG_Int(REGB1), sizeof(val_t));
-  /* ../lib/standard/collection/array.nit:312 */
+  /* ../lib/standard/collection/array.nit:313 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___Array____capacity(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___array, 312);
+    nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___array, 313);
   }
   REGB0 = ATTR_standard___collection___array___Array____capacity(fra.me.REG[0]);
   REGB3 = TAG_Int(0);
@@ -1746,32 +1780,33 @@ void standard___collection___array___Array___enlarge(val_t p0, val_t p1){
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:234 */
+  /* ../lib/standard/kernel.nit:244 */
   REGB3 = TAG_Bool(UNTAG_Int(REGB0)>UNTAG_Int(REGB3));
-  /* ../lib/standard/collection/array.nit:312 */
+  /* ../lib/standard/collection/array.nit:313 */
   if (UNTAG_Bool(REGB3)) {
     fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[0]);
     REGB3 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0])!=NIT_NULL);
     if (UNTAG_Bool(REGB3)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 312);
+      nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 313);
     }
     REGB3 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
     REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 312);
+      nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 313);
     }
-    /* ../lib/standard/collection/array.nit:720 */
+    /* ../lib/standard/collection/array.nit:727 */
     (void)memcpy(((Nit_NativeArray )fra.me.REG[1])->val, ((Nit_NativeArray)fra.me.REG[2])->val, UNTAG_Int(REGB3)*sizeof(val_t));
   }
-  /* ../lib/standard/collection/array.nit:313 */
-  ATTR_standard___collection___array___Array____items(fra.me.REG[0]) = fra.me.REG[1];
   /* ../lib/standard/collection/array.nit:314 */
+  ATTR_standard___collection___array___Array____items(fra.me.REG[0]) = fra.me.REG[1];
+  /* ../lib/standard/collection/array.nit:315 */
   ATTR_standard___collection___array___Array____capacity(fra.me.REG[0]) = REGB1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___Array___init[] = "array::Array::init";
 void standard___collection___array___Array___init(val_t p0, int* init_table){
   int itpos1 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___Array].i;
   struct {struct stack_frame_t me;} fra;
@@ -1780,32 +1815,60 @@ void standard___collection___array___Array___init(val_t p0, int* init_table){
   if (init_table[itpos1]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 317;
+  fra.me.line = 318;
   fra.me.meth = LOCATE_standard___collection___array___Array___init;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:320 */
+  /* ../lib/standard/collection/array.nit:321 */
   REGB0 = TAG_Int(0);
   ATTR_standard___collection___array___Array____capacity(fra.me.REG[0]) = REGB0;
-  /* ../lib/standard/collection/array.nit:321 */
+  /* ../lib/standard/collection/array.nit:322 */
   REGB0 = TAG_Int(0);
   ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
   init_table[itpos1] = 1;
   return;
 }
-void standard___collection___array___Array___with_items(val_t p0, val_t p1, int* init_table){
+static const char LOCATE_standard___collection___array___Array___from[] = "array::Array::from";
+void standard___collection___array___Array___from(val_t p0, val_t p1, int* init_table){
   int itpos2 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___Array].i;
-  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
+  struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   if (init_table[itpos2]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 324;
+  fra.me.line = 325;
+  fra.me.meth = LOCATE_standard___collection___array___Array___from;
+  fra.me.has_broke = 0;
+  fra.me.REG_size = 2;
+  fra.me.nitni_local_ref_head = NULL;
+  fra.me.REG[0] = NIT_NULL;
+  fra.me.REG[1] = NIT_NULL;
+  fra.me.REG[0] = p0;
+  fra.me.REG[1] = p1;
+  /* ../lib/standard/collection/array.nit:327 */
+  REGB0 = CALL_standard___collection___abstract_collection___Collection___length(fra.me.REG[1])(fra.me.REG[1]);
+  CALL_standard___collection___array___Array___with_capacity(fra.me.REG[0])(fra.me.REG[0], REGB0, init_table);
+  /* ../lib/standard/collection/array.nit:328 */
+  CALL_standard___collection___abstract_collection___SimpleCollection___add_all(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
+  stack_frame_head = fra.me.prev;
+  init_table[itpos2] = 1;
+  return;
+}
+static const char LOCATE_standard___collection___array___Array___with_items[] = "array::Array::with_items";
+void standard___collection___array___Array___with_items(val_t p0, val_t p1, int* init_table){
+  int itpos3 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___Array].i;
+  struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
+  val_t REGB0;
+  val_t tmp;
+  if (init_table[itpos3]) return;
+  fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
+  fra.me.file = LOCATE_standard___collection___array;
+  fra.me.line = 331;
   fra.me.meth = LOCATE_standard___collection___array___Array___with_items;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
@@ -1815,21 +1878,21 @@ void standard___collection___array___Array___with_items(val_t p0, val_t p1, int*
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:324 */
+  /* ../lib/standard/collection/array.nit:331 */
   fra.me.REG[2] = fra.me.REG[0];
   REGB0 = TAG_Bool((fra.me.REG[1]!=NIT_NULL) && VAL_ISA(fra.me.REG[1], COLOR_standard___collection___array___Array, ID_standard___collection___array___Array)) /*cast Array[E]*/;
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_standard___collection___array, 324);
+    nit_abort("Cast failed", NULL, LOCATE_standard___collection___array, 331);
   }
-  /* ../lib/standard/collection/array.nit:327 */
+  /* ../lib/standard/collection/array.nit:334 */
   fra.me.REG[0] = ATTR_standard___collection___array___Array____items(fra.me.REG[1]);
   ATTR_standard___collection___array___Array____items(fra.me.REG[2]) = fra.me.REG[0];
-  /* ../lib/standard/collection/array.nit:328 */
+  /* ../lib/standard/collection/array.nit:335 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___Array____capacity(fra.me.REG[1])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___array, 328);
+    nit_abort("Uninitialized attribute %s", "_capacity", LOCATE_standard___collection___array, 335);
   }
   REGB0 = ATTR_standard___collection___array___Array____capacity(fra.me.REG[1]);
   ATTR_standard___collection___array___Array____capacity(fra.me.REG[2]) = REGB0;
@@ -1840,23 +1903,24 @@ void standard___collection___array___Array___with_items(val_t p0, val_t p1, int*
     nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
   }
   REGB0 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-  /* ../lib/standard/collection/array.nit:329 */
+  /* ../lib/standard/collection/array.nit:336 */
   ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]) = REGB0;
   stack_frame_head = fra.me.prev;
-  init_table[itpos2] = 1;
+  init_table[itpos3] = 1;
   return;
 }
+static const char LOCATE_standard___collection___array___Array___with_capacity[] = "array::Array::with_capacity";
 void standard___collection___array___Array___with_capacity(val_t p0, val_t p1, int* init_table){
-  int itpos3 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___Array].i;
+  int itpos4 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___Array].i;
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t REGB1;
   val_t REGB2;
   val_t tmp;
-  if (init_table[itpos3]) return;
+  if (init_table[itpos4]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 332;
+  fra.me.line = 339;
   fra.me.meth = LOCATE_standard___collection___array___Array___with_capacity;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -1865,44 +1929,45 @@ void standard___collection___array___Array___with_capacity(val_t p0, val_t p1, i
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   REGB0 = p1;
-  /* ../lib/standard/collection/array.nit:335 */
+  /* ../lib/standard/collection/array.nit:342 */
   REGB1 = TAG_Int(0);
   REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
   if (UNTAG_Bool(REGB2)) {
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:233 */
+  /* ../lib/standard/kernel.nit:243 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:335 */
+  /* ../lib/standard/collection/array.nit:342 */
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Assert '%s' failed", "positive", LOCATE_standard___collection___array, 335);
+    nit_abort("Assert '%s' failed", "positive", LOCATE_standard___collection___array, 342);
   }
-  /* ../lib/standard/collection/array.nit:712 */
+  /* ../lib/standard/collection/array.nit:719 */
   fra.me.REG[1] = NEW_NativeArray(UNTAG_Int(REGB0), sizeof(val_t));
-  /* ../lib/standard/collection/array.nit:336 */
+  /* ../lib/standard/collection/array.nit:343 */
   ATTR_standard___collection___array___Array____items(fra.me.REG[0]) = fra.me.REG[1];
-  /* ../lib/standard/collection/array.nit:337 */
+  /* ../lib/standard/collection/array.nit:344 */
   ATTR_standard___collection___array___Array____capacity(fra.me.REG[0]) = REGB0;
-  /* ../lib/standard/collection/array.nit:338 */
+  /* ../lib/standard/collection/array.nit:345 */
   REGB0 = TAG_Int(0);
   ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
-  init_table[itpos3] = 1;
+  init_table[itpos4] = 1;
   return;
 }
+static const char LOCATE_standard___collection___array___Array___filled_with[] = "array::Array::filled_with";
 void standard___collection___array___Array___filled_with(val_t p0, val_t p1, val_t p2, int* init_table){
-  int itpos4 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___Array].i;
+  int itpos5 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___Array].i;
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
   val_t REGB1;
   val_t REGB2;
   val_t tmp;
-  if (init_table[itpos4]) return;
+  if (init_table[itpos5]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 341;
+  fra.me.line = 348;
   fra.me.meth = LOCATE_standard___collection___array___Array___filled_with;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
@@ -1913,70 +1978,71 @@ void standard___collection___array___Array___filled_with(val_t p0, val_t p1, val
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   REGB0 = p2;
-  /* ../lib/standard/collection/array.nit:344 */
+  /* ../lib/standard/collection/array.nit:351 */
   REGB1 = TAG_Int(0);
   REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
   if (UNTAG_Bool(REGB2)) {
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:233 */
+  /* ../lib/standard/kernel.nit:243 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:344 */
+  /* ../lib/standard/collection/array.nit:351 */
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Assert '%s' failed", "positive", LOCATE_standard___collection___array, 344);
+    nit_abort("Assert '%s' failed", "positive", LOCATE_standard___collection___array, 351);
   }
-  /* ../lib/standard/collection/array.nit:712 */
+  /* ../lib/standard/collection/array.nit:719 */
   fra.me.REG[2] = NEW_NativeArray(UNTAG_Int(REGB0), sizeof(val_t));
-  /* ../lib/standard/collection/array.nit:345 */
+  /* ../lib/standard/collection/array.nit:352 */
   ATTR_standard___collection___array___Array____items(fra.me.REG[0]) = fra.me.REG[2];
-  /* ../lib/standard/collection/array.nit:346 */
+  /* ../lib/standard/collection/array.nit:353 */
   ATTR_standard___collection___array___Array____capacity(fra.me.REG[0]) = REGB0;
-  /* ../lib/standard/collection/array.nit:347 */
+  /* ../lib/standard/collection/array.nit:354 */
   ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]) = REGB0;
-  /* ../lib/standard/collection/array.nit:348 */
+  /* ../lib/standard/collection/array.nit:355 */
   REGB1 = TAG_Int(0);
-  /* ../lib/standard/collection/array.nit:349 */
+  /* ../lib/standard/collection/array.nit:356 */
   while(1) {
     REGB2 = TAG_Bool(VAL_ISA(REGB0, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
     if (UNTAG_Bool(REGB2)) {
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:242 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB0));
-    /* ../lib/standard/collection/array.nit:349 */
+    /* ../lib/standard/collection/array.nit:356 */
     if (UNTAG_Bool(REGB2)) {
-      /* ../lib/standard/collection/array.nit:350 */
+      /* ../lib/standard/collection/array.nit:357 */
       CALL_standard___collection___abstract_collection___Sequence_____braeq(fra.me.REG[0])(fra.me.REG[0], REGB1, fra.me.REG[1]);
-      /* ../lib/standard/collection/array.nit:351 */
+      /* ../lib/standard/collection/array.nit:358 */
       REGB2 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:245 */
       REGB2 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB2));
-      /* ../lib/standard/collection/array.nit:351 */
+      /* ../lib/standard/collection/array.nit:358 */
       REGB1 = REGB2;
     } else {
-      /* ../lib/standard/collection/array.nit:349 */
+      /* ../lib/standard/collection/array.nit:356 */
       goto label1;
     }
   }
   label1: while(0);
   stack_frame_head = fra.me.prev;
-  init_table[itpos4] = 1;
+  init_table[itpos5] = 1;
   return;
 }
+static const char LOCATE_standard___collection___array___Array___with_native[] = "array::Array::with_native";
 void standard___collection___array___Array___with_native(val_t p0, val_t p1, val_t p2, int* init_table){
-  int itpos5 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___Array].i;
+  int itpos6 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___Array].i;
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t REGB1;
   val_t REGB2;
   val_t tmp;
-  if (init_table[itpos5]) return;
+  if (init_table[itpos6]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 355;
+  fra.me.line = 362;
   fra.me.meth = LOCATE_standard___collection___array___Array___with_native;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -1986,37 +2052,38 @@ void standard___collection___array___Array___with_native(val_t p0, val_t p1, val
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   REGB0 = p2;
-  /* ../lib/standard/collection/array.nit:358 */
+  /* ../lib/standard/collection/array.nit:365 */
   REGB1 = TAG_Int(0);
   REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
   if (UNTAG_Bool(REGB2)) {
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:233 */
+  /* ../lib/standard/kernel.nit:243 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:358 */
+  /* ../lib/standard/collection/array.nit:365 */
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Assert '%s' failed", "positive", LOCATE_standard___collection___array, 358);
+    nit_abort("Assert '%s' failed", "positive", LOCATE_standard___collection___array, 365);
   }
-  /* ../lib/standard/collection/array.nit:359 */
+  /* ../lib/standard/collection/array.nit:366 */
   ATTR_standard___collection___array___Array____items(fra.me.REG[0]) = fra.me.REG[1];
-  /* ../lib/standard/collection/array.nit:360 */
+  /* ../lib/standard/collection/array.nit:367 */
   ATTR_standard___collection___array___Array____capacity(fra.me.REG[0]) = REGB0;
-  /* ../lib/standard/collection/array.nit:361 */
+  /* ../lib/standard/collection/array.nit:368 */
   ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
-  init_table[itpos5] = 1;
+  init_table[itpos6] = 1;
   return;
 }
+static const char LOCATE_standard___collection___array___Array___intern_items[] = "array::Array::intern_items";
 val_t standard___collection___array___Array___intern_items(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 367;
+  fra.me.line = 374;
   fra.me.meth = LOCATE_standard___collection___array___Array___intern_items;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -2024,20 +2091,21 @@ val_t standard___collection___array___Array___intern_items(val_t p0){
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:367 */
+  /* ../lib/standard/collection/array.nit:374 */
   fra.me.REG[1] = fra.me.REG[0];
-  /* ../lib/standard/collection/array.nit:369 */
+  /* ../lib/standard/collection/array.nit:376 */
   fra.me.REG[1] = ATTR_standard___collection___array___Array____items(fra.me.REG[1]);
   REGB0 = TAG_Bool(fra.me.REG[1]!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Cast failed", NULL, LOCATE_standard___collection___array, 369);
+    nit_abort("Cast failed", NULL, LOCATE_standard___collection___array, 376);
   }
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_standard___collection___array___Array___sort[] = "array::Array::sort";
 void standard___collection___array___Array___sort(val_t p0, struct stack_frame_t *closctx_param, fun_t clos_fun0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -2047,7 +2115,7 @@ void standard___collection___array___Array___sort(val_t p0, struct stack_frame_t
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 374;
+  fra.me.line = 381;
   fra.me.meth = LOCATE_standard___collection___array___Array___sort;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
@@ -2057,7 +2125,7 @@ void standard___collection___array___Array___sort(val_t p0, struct stack_frame_t
   fra.me.closure_funs = CREG;
   fra.me.REG[0] = p0;
   CREG[0] = clos_fun0;
-  /* ../lib/standard/collection/array.nit:378 */
+  /* ../lib/standard/collection/array.nit:385 */
   REGB0 = TAG_Int(0);
   /* ../lib/standard/collection/array.nit:24 */
   REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0])!=NIT_NULL);
@@ -2066,9 +2134,9 @@ void standard___collection___array___Array___sort(val_t p0, struct stack_frame_t
     nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
   }
   REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
-  /* ../lib/standard/collection/array.nit:378 */
+  /* ../lib/standard/collection/array.nit:385 */
   REGB2 = TAG_Int(1);
-  /* ../lib/standard/kernel.nit:237 */
+  /* ../lib/standard/kernel.nit:247 */
   REGB2 = TAG_Int(UNTAG_Int(REGB1)-UNTAG_Int(REGB2));
   CALL_standard___collection___array___Array___sub_sort(fra.me.REG[0])(fra.me.REG[0], REGB0, REGB2, (&(fra.me)), ((fun_t)OC_standard___collection___array___Array___sort_1));
   switch ((&(fra.me))->has_broke) {
@@ -2083,10 +2151,10 @@ void standard___collection___array___Array___sort(val_t p0, struct stack_frame_t
     struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
     val_t REGB0;
     val_t tmp;
-    /* ../lib/standard/collection/array.nit:378 */
+    /* ../lib/standard/collection/array.nit:385 */
     fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
     fra.me.file = LOCATE_standard___collection___array;
-    fra.me.line = 378;
+    fra.me.line = 385;
     fra.me.meth = LOCATE_standard___collection___array___Array___sort;
     fra.me.has_broke = 0;
     fra.me.REG_size = 2;
@@ -2105,6 +2173,7 @@ void standard___collection___array___Array___sort(val_t p0, struct stack_frame_t
     stack_frame_head = fra.me.prev;
     return REGB0;
   }
+static const char LOCATE_standard___collection___array___Array___sub_sort[] = "array::Array::sub_sort";
 void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t p2, struct stack_frame_t *closctx_param, fun_t clos_fun0){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -2118,7 +2187,7 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 381;
+  fra.me.line = 388;
   fra.me.meth = LOCATE_standard___collection___array___Array___sub_sort;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
@@ -2138,44 +2207,44 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:233 */
+  /* ../lib/standard/kernel.nit:243 */
   REGB2 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:385 */
+  /* ../lib/standard/collection/array.nit:392 */
   if (UNTAG_Bool(REGB2)) {
-    /* ../lib/standard/collection/array.nit:386 */
+    /* ../lib/standard/collection/array.nit:393 */
     goto label1;
   } else {
-    /* ../lib/standard/collection/array.nit:387 */
+    /* ../lib/standard/collection/array.nit:394 */
     REGB2 = TAG_Int(7);
-    /* ../lib/standard/kernel.nit:235 */
+    /* ../lib/standard/kernel.nit:245 */
     REGB2 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB2));
     REGB3 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
     if (UNTAG_Bool(REGB3)) {
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:242 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB2)<UNTAG_Int(REGB1));
-    /* ../lib/standard/collection/array.nit:387 */
+    /* ../lib/standard/collection/array.nit:394 */
     if (UNTAG_Bool(REGB2)) {
-      /* ../lib/standard/collection/array.nit:278 */
+      /* ../lib/standard/collection/array.nit:279 */
       fra.me.REG[1] = fra.me.REG[0];
       REGB2 = REGB0;
-      /* ../lib/standard/collection/array.nit:280 */
+      /* ../lib/standard/collection/array.nit:281 */
       REGB3 = TAG_Int(0);
       REGB4 = TAG_Bool(VAL_ISA(REGB3, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
       if (UNTAG_Bool(REGB4)) {
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ../lib/standard/kernel.nit:233 */
+      /* ../lib/standard/kernel.nit:243 */
       REGB3 = TAG_Bool(UNTAG_Int(REGB2)>=UNTAG_Int(REGB3));
-      /* ../lib/standard/collection/array.nit:280 */
+      /* ../lib/standard/collection/array.nit:281 */
       if (UNTAG_Bool(REGB3)) {
         REGB3 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
         if (UNTAG_Bool(REGB3)) {
         } else {
-          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
+          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 281);
         }
         REGB3 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
         REGB4 = TAG_Bool(VAL_ISA(REGB3, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
@@ -2183,72 +2252,72 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
         } else {
           nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
         }
-        /* ../lib/standard/kernel.nit:232 */
+        /* ../lib/standard/kernel.nit:242 */
         REGB3 = TAG_Bool(UNTAG_Int(REGB2)<UNTAG_Int(REGB3));
       } else {
-        /* ../lib/standard/collection/array.nit:280 */
-        REGB4 = TAG_Bool(false);
+        /* ../lib/standard/collection/array.nit:281 */
+        REGB4 = TAG_Bool(0);
         REGB3 = REGB4;
       }
       if (UNTAG_Bool(REGB3)) {
       } else {
-        nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
+        nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
       }
-      /* ../lib/standard/collection/array.nit:281 */
+      /* ../lib/standard/collection/array.nit:282 */
       fra.me.REG[1] = ATTR_standard___collection___array___Array____items(fra.me.REG[1]);
       REGB3 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
       if (UNTAG_Bool(REGB3)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
+        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
       }
-      /* ../lib/standard/collection/array.nit:718 */
+      /* ../lib/standard/collection/array.nit:725 */
       fra.me.REG[1] = ((Nit_NativeArray)fra.me.REG[1])->val[UNTAG_Int(REGB2)];
-      /* ../lib/standard/collection/array.nit:281 */
+      /* ../lib/standard/collection/array.nit:282 */
       goto label2;
       label2: while(0);
-      /* ../lib/standard/collection/array.nit:389 */
+      /* ../lib/standard/collection/array.nit:396 */
       REGB2 = REGB0;
-      /* ../lib/standard/collection/array.nit:390 */
+      /* ../lib/standard/collection/array.nit:397 */
       REGB3 = REGB1;
-      /* ../lib/standard/collection/array.nit:391 */
+      /* ../lib/standard/collection/array.nit:398 */
       while(1) {
         REGB4 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
         if (UNTAG_Bool(REGB4)) {
         } else {
           nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
         }
-        /* ../lib/standard/kernel.nit:234 */
+        /* ../lib/standard/kernel.nit:244 */
         REGB4 = TAG_Bool(UNTAG_Int(REGB3)>UNTAG_Int(REGB2));
-        /* ../lib/standard/collection/array.nit:391 */
+        /* ../lib/standard/collection/array.nit:398 */
         if (UNTAG_Bool(REGB4)) {
-          /* ../lib/standard/collection/array.nit:392 */
+          /* ../lib/standard/collection/array.nit:399 */
           while(1) {
             REGB4 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
             if (UNTAG_Bool(REGB4)) {
             } else {
               nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
             }
-            /* ../lib/standard/kernel.nit:231 */
+            /* ../lib/standard/kernel.nit:241 */
             REGB4 = TAG_Bool(UNTAG_Int(REGB2)<=UNTAG_Int(REGB1));
-            /* ../lib/standard/collection/array.nit:392 */
+            /* ../lib/standard/collection/array.nit:399 */
             if (UNTAG_Bool(REGB4)) {
-              /* ../lib/standard/collection/array.nit:278 */
+              /* ../lib/standard/collection/array.nit:279 */
               fra.me.REG[2] = fra.me.REG[0];
               REGB4 = REGB2;
-              /* ../lib/standard/collection/array.nit:280 */
+              /* ../lib/standard/collection/array.nit:281 */
               REGB5 = TAG_Int(0);
               REGB6 = TAG_Bool(VAL_ISA(REGB5, VTCOLOR_standard___kernel___Comparable___OTHER(REGB4), VTID_standard___kernel___Comparable___OTHER(REGB4))) /*cast OTHER*/;
               if (UNTAG_Bool(REGB6)) {
               } else {
                nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
               }
-              /* ../lib/standard/kernel.nit:233 */
+              /* ../lib/standard/kernel.nit:243 */
               REGB5 = TAG_Bool(UNTAG_Int(REGB4)>=UNTAG_Int(REGB5));
-              /* ../lib/standard/collection/array.nit:280 */
+              /* ../lib/standard/collection/array.nit:281 */
               if (UNTAG_Bool(REGB5)) {
                REGB5 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
                if (UNTAG_Bool(REGB5)) {
                } else {
-               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
+               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 281);
                }
                REGB5 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
                REGB6 = TAG_Bool(VAL_ISA(REGB5, VTCOLOR_standard___kernel___Comparable___OTHER(REGB4), VTID_standard___kernel___Comparable___OTHER(REGB4))) /*cast OTHER*/;
@@ -2256,29 +2325,29 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
                } else {
                nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
                }
-               /* ../lib/standard/kernel.nit:232 */
+               /* ../lib/standard/kernel.nit:242 */
                REGB5 = TAG_Bool(UNTAG_Int(REGB4)<UNTAG_Int(REGB5));
               } else {
-               /* ../lib/standard/collection/array.nit:280 */
-               REGB6 = TAG_Bool(false);
+               /* ../lib/standard/collection/array.nit:281 */
+               REGB6 = TAG_Bool(0);
                REGB5 = REGB6;
               }
               if (UNTAG_Bool(REGB5)) {
               } else {
-               nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
+               nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
               }
-              /* ../lib/standard/collection/array.nit:281 */
+              /* ../lib/standard/collection/array.nit:282 */
               fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[2]);
               REGB5 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
               if (UNTAG_Bool(REGB5)) {
-               nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
+               nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
               }
-              /* ../lib/standard/collection/array.nit:718 */
+              /* ../lib/standard/collection/array.nit:725 */
               fra.me.REG[2] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB4)];
-              /* ../lib/standard/collection/array.nit:281 */
+              /* ../lib/standard/collection/array.nit:282 */
               goto label3;
               label3: while(0);
-              /* ../lib/standard/collection/array.nit:392 */
+              /* ../lib/standard/collection/array.nit:399 */
               REGB4 = ((val_t (*)(struct stack_frame_t *, val_t, val_t))(CREG[0]))(closctx_param, fra.me.REG[2], fra.me.REG[1]);
               if (closctx_param->has_broke) {
                goto label1;
@@ -2289,53 +2358,53 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
               } else {
                nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
               }
-              /* ../lib/standard/kernel.nit:231 */
+              /* ../lib/standard/kernel.nit:241 */
               REGB5 = TAG_Bool(UNTAG_Int(REGB4)<=UNTAG_Int(REGB5));
             } else {
-              /* ../lib/standard/collection/array.nit:392 */
-              REGB4 = TAG_Bool(false);
+              /* ../lib/standard/collection/array.nit:399 */
+              REGB4 = TAG_Bool(0);
               REGB5 = REGB4;
             }
             if (UNTAG_Bool(REGB5)) {
               REGB5 = TAG_Int(1);
-              /* ../lib/standard/kernel.nit:235 */
+              /* ../lib/standard/kernel.nit:245 */
               REGB5 = TAG_Int(UNTAG_Int(REGB2)+UNTAG_Int(REGB5));
-              /* ../lib/standard/collection/array.nit:392 */
+              /* ../lib/standard/collection/array.nit:399 */
               REGB2 = REGB5;
             } else {
               goto label4;
             }
           }
           label4: while(0);
-          /* ../lib/standard/collection/array.nit:393 */
+          /* ../lib/standard/collection/array.nit:400 */
           while(1) {
             REGB5 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
             if (UNTAG_Bool(REGB5)) {
             } else {
               nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
             }
-            /* ../lib/standard/kernel.nit:234 */
+            /* ../lib/standard/kernel.nit:244 */
             REGB5 = TAG_Bool(UNTAG_Int(REGB3)>UNTAG_Int(REGB2));
-            /* ../lib/standard/collection/array.nit:393 */
+            /* ../lib/standard/collection/array.nit:400 */
             if (UNTAG_Bool(REGB5)) {
-              /* ../lib/standard/collection/array.nit:278 */
+              /* ../lib/standard/collection/array.nit:279 */
               fra.me.REG[2] = fra.me.REG[0];
               REGB5 = REGB3;
-              /* ../lib/standard/collection/array.nit:280 */
+              /* ../lib/standard/collection/array.nit:281 */
               REGB4 = TAG_Int(0);
               REGB6 = TAG_Bool(VAL_ISA(REGB4, VTCOLOR_standard___kernel___Comparable___OTHER(REGB5), VTID_standard___kernel___Comparable___OTHER(REGB5))) /*cast OTHER*/;
               if (UNTAG_Bool(REGB6)) {
               } else {
                nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
               }
-              /* ../lib/standard/kernel.nit:233 */
+              /* ../lib/standard/kernel.nit:243 */
               REGB4 = TAG_Bool(UNTAG_Int(REGB5)>=UNTAG_Int(REGB4));
-              /* ../lib/standard/collection/array.nit:280 */
+              /* ../lib/standard/collection/array.nit:281 */
               if (UNTAG_Bool(REGB4)) {
                REGB4 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
                if (UNTAG_Bool(REGB4)) {
                } else {
-               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
+               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 281);
                }
                REGB4 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
                REGB6 = TAG_Bool(VAL_ISA(REGB4, VTCOLOR_standard___kernel___Comparable___OTHER(REGB5), VTID_standard___kernel___Comparable___OTHER(REGB5))) /*cast OTHER*/;
@@ -2343,29 +2412,29 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
                } else {
                nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
                }
-               /* ../lib/standard/kernel.nit:232 */
+               /* ../lib/standard/kernel.nit:242 */
                REGB4 = TAG_Bool(UNTAG_Int(REGB5)<UNTAG_Int(REGB4));
               } else {
-               /* ../lib/standard/collection/array.nit:280 */
-               REGB6 = TAG_Bool(false);
+               /* ../lib/standard/collection/array.nit:281 */
+               REGB6 = TAG_Bool(0);
                REGB4 = REGB6;
               }
               if (UNTAG_Bool(REGB4)) {
               } else {
-               nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
+               nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
               }
-              /* ../lib/standard/collection/array.nit:281 */
+              /* ../lib/standard/collection/array.nit:282 */
               fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[2]);
               REGB4 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
               if (UNTAG_Bool(REGB4)) {
-               nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
+               nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
               }
-              /* ../lib/standard/collection/array.nit:718 */
+              /* ../lib/standard/collection/array.nit:725 */
               fra.me.REG[2] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB5)];
-              /* ../lib/standard/collection/array.nit:281 */
+              /* ../lib/standard/collection/array.nit:282 */
               goto label5;
               label5: while(0);
-              /* ../lib/standard/collection/array.nit:393 */
+              /* ../lib/standard/collection/array.nit:400 */
               REGB5 = ((val_t (*)(struct stack_frame_t *, val_t, val_t))(CREG[0]))(closctx_param, fra.me.REG[2], fra.me.REG[1]);
               if (closctx_param->has_broke) {
                goto label1;
@@ -2376,18 +2445,18 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
               } else {
                nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
               }
-              /* ../lib/standard/kernel.nit:233 */
+              /* ../lib/standard/kernel.nit:243 */
               REGB4 = TAG_Bool(UNTAG_Int(REGB5)>=UNTAG_Int(REGB4));
             } else {
-              /* ../lib/standard/collection/array.nit:393 */
-              REGB5 = TAG_Bool(false);
+              /* ../lib/standard/collection/array.nit:400 */
+              REGB5 = TAG_Bool(0);
               REGB4 = REGB5;
             }
             if (UNTAG_Bool(REGB4)) {
               REGB4 = TAG_Int(1);
-              /* ../lib/standard/kernel.nit:237 */
+              /* ../lib/standard/kernel.nit:247 */
               REGB4 = TAG_Int(UNTAG_Int(REGB3)-UNTAG_Int(REGB4));
-              /* ../lib/standard/collection/array.nit:393 */
+              /* ../lib/standard/collection/array.nit:400 */
               REGB3 = REGB4;
             } else {
               goto label6;
@@ -2399,28 +2468,28 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
           } else {
             nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
           }
-          /* ../lib/standard/kernel.nit:234 */
+          /* ../lib/standard/kernel.nit:244 */
           REGB4 = TAG_Bool(UNTAG_Int(REGB3)>UNTAG_Int(REGB2));
-          /* ../lib/standard/collection/array.nit:394 */
+          /* ../lib/standard/collection/array.nit:401 */
           if (UNTAG_Bool(REGB4)) {
-            /* ../lib/standard/collection/array.nit:278 */
+            /* ../lib/standard/collection/array.nit:279 */
             fra.me.REG[2] = fra.me.REG[0];
             REGB4 = REGB2;
-            /* ../lib/standard/collection/array.nit:280 */
+            /* ../lib/standard/collection/array.nit:281 */
             REGB5 = TAG_Int(0);
             REGB6 = TAG_Bool(VAL_ISA(REGB5, VTCOLOR_standard___kernel___Comparable___OTHER(REGB4), VTID_standard___kernel___Comparable___OTHER(REGB4))) /*cast OTHER*/;
             if (UNTAG_Bool(REGB6)) {
             } else {
               nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
             }
-            /* ../lib/standard/kernel.nit:233 */
+            /* ../lib/standard/kernel.nit:243 */
             REGB5 = TAG_Bool(UNTAG_Int(REGB4)>=UNTAG_Int(REGB5));
-            /* ../lib/standard/collection/array.nit:280 */
+            /* ../lib/standard/collection/array.nit:281 */
             if (UNTAG_Bool(REGB5)) {
               REGB5 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
               if (UNTAG_Bool(REGB5)) {
               } else {
-               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
+               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 281);
               }
               REGB5 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
               REGB6 = TAG_Bool(VAL_ISA(REGB5, VTCOLOR_standard___kernel___Comparable___OTHER(REGB4), VTID_standard___kernel___Comparable___OTHER(REGB4))) /*cast OTHER*/;
@@ -2428,46 +2497,46 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
               } else {
                nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
               }
-              /* ../lib/standard/kernel.nit:232 */
+              /* ../lib/standard/kernel.nit:242 */
               REGB5 = TAG_Bool(UNTAG_Int(REGB4)<UNTAG_Int(REGB5));
             } else {
-              /* ../lib/standard/collection/array.nit:280 */
-              REGB6 = TAG_Bool(false);
+              /* ../lib/standard/collection/array.nit:281 */
+              REGB6 = TAG_Bool(0);
               REGB5 = REGB6;
             }
             if (UNTAG_Bool(REGB5)) {
             } else {
-              nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
+              nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
             }
-            /* ../lib/standard/collection/array.nit:281 */
+            /* ../lib/standard/collection/array.nit:282 */
             fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[2]);
             REGB5 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
             if (UNTAG_Bool(REGB5)) {
-              nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
+              nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
             }
-            /* ../lib/standard/collection/array.nit:718 */
+            /* ../lib/standard/collection/array.nit:725 */
             fra.me.REG[2] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB4)];
-            /* ../lib/standard/collection/array.nit:281 */
+            /* ../lib/standard/collection/array.nit:282 */
             goto label7;
             label7: while(0);
-            /* ../lib/standard/collection/array.nit:278 */
+            /* ../lib/standard/collection/array.nit:279 */
             fra.me.REG[3] = fra.me.REG[0];
             REGB4 = REGB3;
-            /* ../lib/standard/collection/array.nit:280 */
+            /* ../lib/standard/collection/array.nit:281 */
             REGB5 = TAG_Int(0);
             REGB6 = TAG_Bool(VAL_ISA(REGB5, VTCOLOR_standard___kernel___Comparable___OTHER(REGB4), VTID_standard___kernel___Comparable___OTHER(REGB4))) /*cast OTHER*/;
             if (UNTAG_Bool(REGB6)) {
             } else {
               nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
             }
-            /* ../lib/standard/kernel.nit:233 */
+            /* ../lib/standard/kernel.nit:243 */
             REGB5 = TAG_Bool(UNTAG_Int(REGB4)>=UNTAG_Int(REGB5));
-            /* ../lib/standard/collection/array.nit:280 */
+            /* ../lib/standard/collection/array.nit:281 */
             if (UNTAG_Bool(REGB5)) {
               REGB5 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
               if (UNTAG_Bool(REGB5)) {
               } else {
-               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
+               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 281);
               }
               REGB5 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3]);
               REGB6 = TAG_Bool(VAL_ISA(REGB5, VTCOLOR_standard___kernel___Comparable___OTHER(REGB4), VTID_standard___kernel___Comparable___OTHER(REGB4))) /*cast OTHER*/;
@@ -2475,60 +2544,60 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
               } else {
                nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
               }
-              /* ../lib/standard/kernel.nit:232 */
+              /* ../lib/standard/kernel.nit:242 */
               REGB5 = TAG_Bool(UNTAG_Int(REGB4)<UNTAG_Int(REGB5));
             } else {
-              /* ../lib/standard/collection/array.nit:280 */
-              REGB6 = TAG_Bool(false);
+              /* ../lib/standard/collection/array.nit:281 */
+              REGB6 = TAG_Bool(0);
               REGB5 = REGB6;
             }
             if (UNTAG_Bool(REGB5)) {
             } else {
-              nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
+              nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
             }
-            /* ../lib/standard/collection/array.nit:281 */
+            /* ../lib/standard/collection/array.nit:282 */
             fra.me.REG[3] = ATTR_standard___collection___array___Array____items(fra.me.REG[3]);
             REGB5 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
             if (UNTAG_Bool(REGB5)) {
-              nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
+              nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
             }
-            /* ../lib/standard/collection/array.nit:718 */
+            /* ../lib/standard/collection/array.nit:725 */
             fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[3])->val[UNTAG_Int(REGB4)];
-            /* ../lib/standard/collection/array.nit:281 */
+            /* ../lib/standard/collection/array.nit:282 */
             goto label8;
             label8: while(0);
-            /* ../lib/standard/collection/array.nit:396 */
+            /* ../lib/standard/collection/array.nit:403 */
             CALL_standard___collection___abstract_collection___Sequence_____braeq(fra.me.REG[0])(fra.me.REG[0], REGB2, fra.me.REG[3]);
-            /* ../lib/standard/collection/array.nit:397 */
+            /* ../lib/standard/collection/array.nit:404 */
             CALL_standard___collection___abstract_collection___Sequence_____braeq(fra.me.REG[0])(fra.me.REG[0], REGB3, fra.me.REG[2]);
           }
         } else {
-          /* ../lib/standard/collection/array.nit:391 */
+          /* ../lib/standard/collection/array.nit:398 */
           goto label9;
         }
       }
       label9: while(0);
-      /* ../lib/standard/collection/array.nit:400 */
+      /* ../lib/standard/collection/array.nit:407 */
       REGB3 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:237 */
+      /* ../lib/standard/kernel.nit:247 */
       REGB3 = TAG_Int(UNTAG_Int(REGB2)-UNTAG_Int(REGB3));
-      /* ../lib/standard/collection/array.nit:278 */
+      /* ../lib/standard/collection/array.nit:279 */
       fra.me.REG[2] = fra.me.REG[0];
-      /* ../lib/standard/collection/array.nit:280 */
+      /* ../lib/standard/collection/array.nit:281 */
       REGB4 = TAG_Int(0);
       REGB5 = TAG_Bool(VAL_ISA(REGB4, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
       if (UNTAG_Bool(REGB5)) {
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ../lib/standard/kernel.nit:233 */
+      /* ../lib/standard/kernel.nit:243 */
       REGB4 = TAG_Bool(UNTAG_Int(REGB3)>=UNTAG_Int(REGB4));
-      /* ../lib/standard/collection/array.nit:280 */
+      /* ../lib/standard/collection/array.nit:281 */
       if (UNTAG_Bool(REGB4)) {
         REGB4 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
         if (UNTAG_Bool(REGB4)) {
         } else {
-          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
+          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 281);
         }
         REGB4 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
         REGB5 = TAG_Bool(VAL_ISA(REGB4, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
@@ -2536,39 +2605,39 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
         } else {
           nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
         }
-        /* ../lib/standard/kernel.nit:232 */
+        /* ../lib/standard/kernel.nit:242 */
         REGB4 = TAG_Bool(UNTAG_Int(REGB3)<UNTAG_Int(REGB4));
       } else {
-        /* ../lib/standard/collection/array.nit:280 */
-        REGB5 = TAG_Bool(false);
+        /* ../lib/standard/collection/array.nit:281 */
+        REGB5 = TAG_Bool(0);
         REGB4 = REGB5;
       }
       if (UNTAG_Bool(REGB4)) {
       } else {
-        nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
+        nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
       }
-      /* ../lib/standard/collection/array.nit:281 */
+      /* ../lib/standard/collection/array.nit:282 */
       fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[2]);
       REGB4 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB4)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
+        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
       }
-      /* ../lib/standard/collection/array.nit:718 */
+      /* ../lib/standard/collection/array.nit:725 */
       fra.me.REG[2] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB3)];
-      /* ../lib/standard/collection/array.nit:281 */
+      /* ../lib/standard/collection/array.nit:282 */
       goto label10;
       label10: while(0);
-      /* ../lib/standard/collection/array.nit:400 */
+      /* ../lib/standard/collection/array.nit:407 */
       CALL_standard___collection___abstract_collection___Sequence_____braeq(fra.me.REG[0])(fra.me.REG[0], REGB0, fra.me.REG[2]);
-      /* ../lib/standard/collection/array.nit:401 */
+      /* ../lib/standard/collection/array.nit:408 */
       REGB3 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:237 */
+      /* ../lib/standard/kernel.nit:247 */
       REGB3 = TAG_Int(UNTAG_Int(REGB2)-UNTAG_Int(REGB3));
-      /* ../lib/standard/collection/array.nit:401 */
+      /* ../lib/standard/collection/array.nit:408 */
       CALL_standard___collection___abstract_collection___Sequence_____braeq(fra.me.REG[0])(fra.me.REG[0], REGB3, fra.me.REG[1]);
-      /* ../lib/standard/collection/array.nit:402 */
+      /* ../lib/standard/collection/array.nit:409 */
       REGB3 = TAG_Int(2);
-      /* ../lib/standard/kernel.nit:237 */
+      /* ../lib/standard/kernel.nit:247 */
       REGB3 = TAG_Int(UNTAG_Int(REGB2)-UNTAG_Int(REGB3));
       CALL_standard___collection___array___Array___sub_sort(fra.me.REG[0])(fra.me.REG[0], REGB0, REGB3, (&(fra.me)), ((fun_t)OC_standard___collection___array___Array___sub_sort_11));
       switch ((&(fra.me))->has_broke) {
@@ -2581,37 +2650,37 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
         case 1: (&(fra.me))->has_broke = 0; goto label1;
       }
     } else {
-      /* ../lib/standard/collection/array.nit:406 */
+      /* ../lib/standard/collection/array.nit:413 */
       while(1) {
         REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
         if (UNTAG_Bool(REGB2)) {
         } else {
           nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
         }
-        /* ../lib/standard/kernel.nit:232 */
+        /* ../lib/standard/kernel.nit:242 */
         REGB2 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-        /* ../lib/standard/collection/array.nit:406 */
+        /* ../lib/standard/collection/array.nit:413 */
         if (UNTAG_Bool(REGB2)) {
-          /* ../lib/standard/collection/array.nit:407 */
+          /* ../lib/standard/collection/array.nit:414 */
           REGB2 = REGB0;
-          /* ../lib/standard/collection/array.nit:278 */
+          /* ../lib/standard/collection/array.nit:279 */
           fra.me.REG[1] = fra.me.REG[0];
           REGB3 = REGB0;
-          /* ../lib/standard/collection/array.nit:280 */
+          /* ../lib/standard/collection/array.nit:281 */
           REGB4 = TAG_Int(0);
           REGB5 = TAG_Bool(VAL_ISA(REGB4, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
           if (UNTAG_Bool(REGB5)) {
           } else {
             nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
           }
-          /* ../lib/standard/kernel.nit:233 */
+          /* ../lib/standard/kernel.nit:243 */
           REGB4 = TAG_Bool(UNTAG_Int(REGB3)>=UNTAG_Int(REGB4));
-          /* ../lib/standard/collection/array.nit:280 */
+          /* ../lib/standard/collection/array.nit:281 */
           if (UNTAG_Bool(REGB4)) {
             REGB4 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1])!=NIT_NULL);
             if (UNTAG_Bool(REGB4)) {
             } else {
-              nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
+              nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 281);
             }
             REGB4 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
             REGB5 = TAG_Bool(VAL_ISA(REGB4, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
@@ -2619,59 +2688,59 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
             } else {
               nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
             }
-            /* ../lib/standard/kernel.nit:232 */
+            /* ../lib/standard/kernel.nit:242 */
             REGB4 = TAG_Bool(UNTAG_Int(REGB3)<UNTAG_Int(REGB4));
           } else {
-            /* ../lib/standard/collection/array.nit:280 */
-            REGB5 = TAG_Bool(false);
+            /* ../lib/standard/collection/array.nit:281 */
+            REGB5 = TAG_Bool(0);
             REGB4 = REGB5;
           }
           if (UNTAG_Bool(REGB4)) {
           } else {
-            nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
+            nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
           }
-          /* ../lib/standard/collection/array.nit:281 */
+          /* ../lib/standard/collection/array.nit:282 */
           fra.me.REG[1] = ATTR_standard___collection___array___Array____items(fra.me.REG[1]);
           REGB4 = TAG_Bool(fra.me.REG[1]==NIT_NULL);
           if (UNTAG_Bool(REGB4)) {
-            nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
+            nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
           }
-          /* ../lib/standard/collection/array.nit:718 */
+          /* ../lib/standard/collection/array.nit:725 */
           fra.me.REG[1] = ((Nit_NativeArray)fra.me.REG[1])->val[UNTAG_Int(REGB3)];
-          /* ../lib/standard/collection/array.nit:281 */
+          /* ../lib/standard/collection/array.nit:282 */
           goto label15;
           label15: while(0);
-          /* ../lib/standard/collection/array.nit:409 */
+          /* ../lib/standard/collection/array.nit:416 */
           REGB3 = REGB0;
-          /* ../lib/standard/collection/array.nit:410 */
+          /* ../lib/standard/collection/array.nit:417 */
           while(1) {
             REGB4 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
             if (UNTAG_Bool(REGB4)) {
             } else {
               nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
             }
-            /* ../lib/standard/kernel.nit:231 */
+            /* ../lib/standard/kernel.nit:241 */
             REGB4 = TAG_Bool(UNTAG_Int(REGB3)<=UNTAG_Int(REGB1));
-            /* ../lib/standard/collection/array.nit:410 */
+            /* ../lib/standard/collection/array.nit:417 */
             if (UNTAG_Bool(REGB4)) {
-              /* ../lib/standard/collection/array.nit:278 */
+              /* ../lib/standard/collection/array.nit:279 */
               fra.me.REG[2] = fra.me.REG[0];
               REGB4 = REGB3;
-              /* ../lib/standard/collection/array.nit:280 */
+              /* ../lib/standard/collection/array.nit:281 */
               REGB5 = TAG_Int(0);
               REGB6 = TAG_Bool(VAL_ISA(REGB5, VTCOLOR_standard___kernel___Comparable___OTHER(REGB4), VTID_standard___kernel___Comparable___OTHER(REGB4))) /*cast OTHER*/;
               if (UNTAG_Bool(REGB6)) {
               } else {
                nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
               }
-              /* ../lib/standard/kernel.nit:233 */
+              /* ../lib/standard/kernel.nit:243 */
               REGB5 = TAG_Bool(UNTAG_Int(REGB4)>=UNTAG_Int(REGB5));
-              /* ../lib/standard/collection/array.nit:280 */
+              /* ../lib/standard/collection/array.nit:281 */
               if (UNTAG_Bool(REGB5)) {
                REGB5 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
                if (UNTAG_Bool(REGB5)) {
                } else {
-               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
+               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 281);
                }
                REGB5 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
                REGB6 = TAG_Bool(VAL_ISA(REGB5, VTCOLOR_standard___kernel___Comparable___OTHER(REGB4), VTID_standard___kernel___Comparable___OTHER(REGB4))) /*cast OTHER*/;
@@ -2679,29 +2748,29 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
                } else {
                nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
                }
-               /* ../lib/standard/kernel.nit:232 */
+               /* ../lib/standard/kernel.nit:242 */
                REGB5 = TAG_Bool(UNTAG_Int(REGB4)<UNTAG_Int(REGB5));
               } else {
-               /* ../lib/standard/collection/array.nit:280 */
-               REGB6 = TAG_Bool(false);
+               /* ../lib/standard/collection/array.nit:281 */
+               REGB6 = TAG_Bool(0);
                REGB5 = REGB6;
               }
               if (UNTAG_Bool(REGB5)) {
               } else {
-               nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
+               nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
               }
-              /* ../lib/standard/collection/array.nit:281 */
+              /* ../lib/standard/collection/array.nit:282 */
               fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[2]);
               REGB5 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
               if (UNTAG_Bool(REGB5)) {
-               nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
+               nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
               }
-              /* ../lib/standard/collection/array.nit:718 */
+              /* ../lib/standard/collection/array.nit:725 */
               fra.me.REG[2] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB4)];
-              /* ../lib/standard/collection/array.nit:281 */
+              /* ../lib/standard/collection/array.nit:282 */
               goto label16;
               label16: while(0);
-              /* ../lib/standard/collection/array.nit:411 */
+              /* ../lib/standard/collection/array.nit:418 */
               REGB4 = ((val_t (*)(struct stack_frame_t *, val_t, val_t))(CREG[0]))(closctx_param, fra.me.REG[1], fra.me.REG[2]);
               if (closctx_param->has_broke) {
                goto label1;
@@ -2712,30 +2781,30 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
               } else {
                nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
               }
-              /* ../lib/standard/kernel.nit:234 */
+              /* ../lib/standard/kernel.nit:244 */
               REGB5 = TAG_Bool(UNTAG_Int(REGB4)>UNTAG_Int(REGB5));
-              /* ../lib/standard/collection/array.nit:411 */
+              /* ../lib/standard/collection/array.nit:418 */
               if (UNTAG_Bool(REGB5)) {
-               /* ../lib/standard/collection/array.nit:412 */
+               /* ../lib/standard/collection/array.nit:419 */
                REGB2 = REGB3;
-               /* ../lib/standard/collection/array.nit:278 */
+               /* ../lib/standard/collection/array.nit:279 */
                fra.me.REG[2] = fra.me.REG[0];
                REGB5 = REGB3;
-               /* ../lib/standard/collection/array.nit:280 */
+               /* ../lib/standard/collection/array.nit:281 */
                REGB4 = TAG_Int(0);
                REGB6 = TAG_Bool(VAL_ISA(REGB4, VTCOLOR_standard___kernel___Comparable___OTHER(REGB5), VTID_standard___kernel___Comparable___OTHER(REGB5))) /*cast OTHER*/;
                if (UNTAG_Bool(REGB6)) {
                } else {
                nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
                }
-               /* ../lib/standard/kernel.nit:233 */
+               /* ../lib/standard/kernel.nit:243 */
                REGB4 = TAG_Bool(UNTAG_Int(REGB5)>=UNTAG_Int(REGB4));
-               /* ../lib/standard/collection/array.nit:280 */
+               /* ../lib/standard/collection/array.nit:281 */
                if (UNTAG_Bool(REGB4)) {
                REGB4 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
                if (UNTAG_Bool(REGB4)) {
                } else {
-               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
+               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 281);
                }
                REGB4 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
                REGB6 = TAG_Bool(VAL_ISA(REGB4, VTCOLOR_standard___kernel___Comparable___OTHER(REGB5), VTID_standard___kernel___Comparable___OTHER(REGB5))) /*cast OTHER*/;
@@ -2743,72 +2812,72 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
                } else {
                nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
                }
-               /* ../lib/standard/kernel.nit:232 */
+               /* ../lib/standard/kernel.nit:242 */
                REGB4 = TAG_Bool(UNTAG_Int(REGB5)<UNTAG_Int(REGB4));
                } else {
-               /* ../lib/standard/collection/array.nit:280 */
-               REGB6 = TAG_Bool(false);
+               /* ../lib/standard/collection/array.nit:281 */
+               REGB6 = TAG_Bool(0);
                REGB4 = REGB6;
                }
                if (UNTAG_Bool(REGB4)) {
                } else {
-               nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
+               nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
                }
-               /* ../lib/standard/collection/array.nit:281 */
+               /* ../lib/standard/collection/array.nit:282 */
                fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[2]);
                REGB4 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
                if (UNTAG_Bool(REGB4)) {
-               nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
+               nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
                }
-               /* ../lib/standard/collection/array.nit:718 */
+               /* ../lib/standard/collection/array.nit:725 */
                fra.me.REG[2] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB5)];
-               /* ../lib/standard/collection/array.nit:281 */
+               /* ../lib/standard/collection/array.nit:282 */
                goto label17;
                label17: while(0);
-               /* ../lib/standard/collection/array.nit:413 */
+               /* ../lib/standard/collection/array.nit:420 */
                fra.me.REG[1] = fra.me.REG[2];
               }
-              /* ../lib/standard/collection/array.nit:415 */
+              /* ../lib/standard/collection/array.nit:422 */
               REGB5 = TAG_Int(1);
-              /* ../lib/standard/kernel.nit:235 */
+              /* ../lib/standard/kernel.nit:245 */
               REGB5 = TAG_Int(UNTAG_Int(REGB3)+UNTAG_Int(REGB5));
-              /* ../lib/standard/collection/array.nit:415 */
+              /* ../lib/standard/collection/array.nit:422 */
               REGB3 = REGB5;
             } else {
-              /* ../lib/standard/collection/array.nit:410 */
+              /* ../lib/standard/collection/array.nit:417 */
               goto label18;
             }
           }
           label18: while(0);
-          /* ../lib/standard/collection/array.nit:417 */
+          /* ../lib/standard/collection/array.nit:424 */
           REGB3 = TAG_Bool(IS_EQUAL_OO(REGB2,REGB0));
           if (UNTAG_Bool(REGB3)) {
           } else {
-            /* ../lib/standard/kernel.nit:227 */
+            /* ../lib/standard/kernel.nit:237 */
             REGB5 = TAG_Bool((REGB2)==(REGB0));
-            /* ../lib/standard/collection/array.nit:417 */
+            /* ../lib/standard/collection/array.nit:424 */
             REGB3 = REGB5;
           }
           REGB3 = TAG_Bool(!UNTAG_Bool(REGB3));
           if (UNTAG_Bool(REGB3)) {
-            /* ../lib/standard/collection/array.nit:278 */
+            /* ../lib/standard/collection/array.nit:279 */
             fra.me.REG[2] = fra.me.REG[0];
             REGB3 = REGB0;
-            /* ../lib/standard/collection/array.nit:280 */
+            /* ../lib/standard/collection/array.nit:281 */
             REGB5 = TAG_Int(0);
             REGB4 = TAG_Bool(VAL_ISA(REGB5, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
             if (UNTAG_Bool(REGB4)) {
             } else {
               nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
             }
-            /* ../lib/standard/kernel.nit:233 */
+            /* ../lib/standard/kernel.nit:243 */
             REGB5 = TAG_Bool(UNTAG_Int(REGB3)>=UNTAG_Int(REGB5));
-            /* ../lib/standard/collection/array.nit:280 */
+            /* ../lib/standard/collection/array.nit:281 */
             if (UNTAG_Bool(REGB5)) {
               REGB5 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
               if (UNTAG_Bool(REGB5)) {
               } else {
-               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
+               nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 281);
               }
               REGB5 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
               REGB4 = TAG_Bool(VAL_ISA(REGB5, VTCOLOR_standard___kernel___Comparable___OTHER(REGB3), VTID_standard___kernel___Comparable___OTHER(REGB3))) /*cast OTHER*/;
@@ -2816,41 +2885,41 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
               } else {
                nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
               }
-              /* ../lib/standard/kernel.nit:232 */
+              /* ../lib/standard/kernel.nit:242 */
               REGB5 = TAG_Bool(UNTAG_Int(REGB3)<UNTAG_Int(REGB5));
             } else {
-              /* ../lib/standard/collection/array.nit:280 */
-              REGB4 = TAG_Bool(false);
+              /* ../lib/standard/collection/array.nit:281 */
+              REGB4 = TAG_Bool(0);
               REGB5 = REGB4;
             }
             if (UNTAG_Bool(REGB5)) {
             } else {
-              nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
+              nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
             }
-            /* ../lib/standard/collection/array.nit:281 */
+            /* ../lib/standard/collection/array.nit:282 */
             fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[2]);
             REGB5 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
             if (UNTAG_Bool(REGB5)) {
-              nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
+              nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
             }
-            /* ../lib/standard/collection/array.nit:718 */
+            /* ../lib/standard/collection/array.nit:725 */
             fra.me.REG[2] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB3)];
-            /* ../lib/standard/collection/array.nit:281 */
+            /* ../lib/standard/collection/array.nit:282 */
             goto label19;
             label19: while(0);
-            /* ../lib/standard/collection/array.nit:418 */
+            /* ../lib/standard/collection/array.nit:425 */
             CALL_standard___collection___abstract_collection___Sequence_____braeq(fra.me.REG[0])(fra.me.REG[0], REGB2, fra.me.REG[2]);
-            /* ../lib/standard/collection/array.nit:419 */
+            /* ../lib/standard/collection/array.nit:426 */
             CALL_standard___collection___abstract_collection___Sequence_____braeq(fra.me.REG[0])(fra.me.REG[0], REGB0, fra.me.REG[1]);
           }
-          /* ../lib/standard/collection/array.nit:421 */
+          /* ../lib/standard/collection/array.nit:428 */
           REGB2 = TAG_Int(1);
-          /* ../lib/standard/kernel.nit:235 */
+          /* ../lib/standard/kernel.nit:245 */
           REGB2 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB2));
-          /* ../lib/standard/collection/array.nit:421 */
+          /* ../lib/standard/collection/array.nit:428 */
           REGB0 = REGB2;
         } else {
-          /* ../lib/standard/collection/array.nit:406 */
+          /* ../lib/standard/collection/array.nit:413 */
           goto label20;
         }
       }
@@ -2865,10 +2934,10 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
         struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
         val_t REGB0;
         val_t tmp;
-        /* ../lib/standard/collection/array.nit:402 */
+        /* ../lib/standard/collection/array.nit:409 */
         fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
         fra.me.file = LOCATE_standard___collection___array;
-        fra.me.line = 402;
+        fra.me.line = 409;
         fra.me.meth = LOCATE_standard___collection___array___Array___sub_sort;
         fra.me.has_broke = 0;
         fra.me.REG_size = 2;
@@ -2891,10 +2960,10 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
         struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
         val_t REGB0;
         val_t tmp;
-        /* ../lib/standard/collection/array.nit:403 */
+        /* ../lib/standard/collection/array.nit:410 */
         fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
         fra.me.file = LOCATE_standard___collection___array;
-        fra.me.line = 403;
+        fra.me.line = 410;
         fra.me.meth = LOCATE_standard___collection___array___Array___sub_sort;
         fra.me.has_broke = 0;
         fra.me.REG_size = 2;
@@ -2913,13 +2982,14 @@ void standard___collection___array___Array___sub_sort(val_t p0, val_t p1, val_t
         stack_frame_head = fra.me.prev;
         return REGB0;
       }
+static const char LOCATE_standard___collection___array___ArrayIterator___item[] = "array::ArrayIterator::(abstract_collection::Iterator::item)";
 val_t standard___collection___array___ArrayIterator___item(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 431;
+  fra.me.line = 438;
   fra.me.meth = LOCATE_standard___collection___array___ArrayIterator___item;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -2927,17 +2997,17 @@ val_t standard___collection___array___ArrayIterator___item(val_t p0){
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:431 */
+  /* ../lib/standard/collection/array.nit:438 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayIterator____array(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 431);
+    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 438);
   }
   fra.me.REG[1] = ATTR_standard___collection___array___ArrayIterator____array(fra.me.REG[0]);
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayIterator____index(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_index", LOCATE_standard___collection___array, 431);
+    nit_abort("Uninitialized attribute %s", "_index", LOCATE_standard___collection___array, 438);
   }
   REGB0 = ATTR_standard___collection___array___ArrayIterator____index(fra.me.REG[0]);
   fra.me.REG[1] = CALL_standard___collection___abstract_collection___SequenceRead_____bra(fra.me.REG[1])(fra.me.REG[1], REGB0);
@@ -2946,6 +3016,7 @@ val_t standard___collection___array___ArrayIterator___item(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_standard___collection___array___ArrayIterator___is_ok[] = "array::ArrayIterator::(abstract_collection::Iterator::is_ok)";
 val_t standard___collection___array___ArrayIterator___is_ok(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -2954,24 +3025,24 @@ val_t standard___collection___array___ArrayIterator___is_ok(val_t p0){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 435;
+  fra.me.line = 442;
   fra.me.meth = LOCATE_standard___collection___array___ArrayIterator___is_ok;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:435 */
+  /* ../lib/standard/collection/array.nit:442 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayIterator____index(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_index", LOCATE_standard___collection___array, 435);
+    nit_abort("Uninitialized attribute %s", "_index", LOCATE_standard___collection___array, 442);
   }
   REGB0 = ATTR_standard___collection___array___ArrayIterator____index(fra.me.REG[0]);
   REGB1 = TAG_Bool(ATTR_standard___collection___array___ArrayIterator____array(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 435);
+    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 442);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArrayIterator____array(fra.me.REG[0]);
   /* ../lib/standard/collection/array.nit:24 */
@@ -2986,14 +3057,15 @@ val_t standard___collection___array___ArrayIterator___is_ok(val_t p0){
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:232 */
+  /* ../lib/standard/kernel.nit:242 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:435 */
+  /* ../lib/standard/collection/array.nit:442 */
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return REGB1;
 }
+static const char LOCATE_standard___collection___array___ArrayIterator___next[] = "array::ArrayIterator::(abstract_collection::Iterator::next)";
 void standard___collection___array___ArrayIterator___next(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -3001,32 +3073,33 @@ void standard___collection___array___ArrayIterator___next(val_t p0){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 437;
+  fra.me.line = 444;
   fra.me.meth = LOCATE_standard___collection___array___ArrayIterator___next;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:437 */
+  /* ../lib/standard/collection/array.nit:444 */
   REGB0 = ATTR_standard___collection___array___ArrayIterator____index(fra.me.REG[0]);
   REGB1 = TAG_Int(1);
-  /* ../lib/standard/kernel.nit:235 */
+  /* ../lib/standard/kernel.nit:245 */
   REGB1 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:437 */
+  /* ../lib/standard/collection/array.nit:444 */
   ATTR_standard___collection___array___ArrayIterator____index(fra.me.REG[0]) = REGB1;
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArrayIterator___init[] = "array::ArrayIterator::init";
 void standard___collection___array___ArrayIterator___init(val_t p0, val_t p1, int* init_table){
-  int itpos6 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___ArrayIterator].i;
+  int itpos7 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___ArrayIterator].i;
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
-  if (init_table[itpos6]) return;
+  if (init_table[itpos7]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 439;
+  fra.me.line = 446;
   fra.me.meth = LOCATE_standard___collection___array___ArrayIterator___init;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -3035,45 +3108,47 @@ void standard___collection___array___ArrayIterator___init(val_t p0, val_t p1, in
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:441 */
+  /* ../lib/standard/collection/array.nit:448 */
   ATTR_standard___collection___array___ArrayIterator____array(fra.me.REG[0]) = fra.me.REG[1];
-  /* ../lib/standard/collection/array.nit:442 */
+  /* ../lib/standard/collection/array.nit:449 */
   REGB0 = TAG_Int(0);
   ATTR_standard___collection___array___ArrayIterator____index(fra.me.REG[0]) = REGB0;
   stack_frame_head = fra.me.prev;
-  init_table[itpos6] = 1;
+  init_table[itpos7] = 1;
   return;
 }
+static const char LOCATE_standard___collection___array___ArrayIterator___index[] = "array::ArrayIterator::(abstract_collection::IndexedIterator::index)";
 val_t standard___collection___array___ArrayIterator___index(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 445;
+  fra.me.line = 452;
   fra.me.meth = LOCATE_standard___collection___array___ArrayIterator___index;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:445 */
+  /* ../lib/standard/collection/array.nit:452 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayIterator____index(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_index", LOCATE_standard___collection___array, 445);
+    nit_abort("Uninitialized attribute %s", "_index", LOCATE_standard___collection___array, 452);
   }
   REGB0 = ATTR_standard___collection___array___ArrayIterator____index(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___array___ArraySet___has[] = "array::ArraySet::(abstract_collection::Collection::has)";
 val_t standard___collection___array___ArraySet___has(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 458;
+  fra.me.line = 465;
   fra.me.meth = LOCATE_standard___collection___array___ArraySet___has;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -3082,11 +3157,11 @@ val_t standard___collection___array___ArraySet___has(val_t p0, val_t p1){
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:458 */
+  /* ../lib/standard/collection/array.nit:465 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 458);
+    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 465);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0]);
   REGB0 = CALL_standard___collection___abstract_collection___Collection___has(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
@@ -3095,13 +3170,14 @@ val_t standard___collection___array___ArraySet___has(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___array___ArraySet___add[] = "array::ArraySet::(abstract_collection::SimpleCollection::add)";
 void standard___collection___array___ArraySet___add(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 460;
+  fra.me.line = 467;
   fra.me.meth = LOCATE_standard___collection___array___ArraySet___add;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
@@ -3111,11 +3187,11 @@ void standard___collection___array___ArraySet___add(val_t p0, val_t p1){
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:460 */
+  /* ../lib/standard/collection/array.nit:467 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 460);
+    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 467);
   }
   fra.me.REG[2] = ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0]);
   REGB0 = CALL_standard___collection___abstract_collection___Collection___has(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
@@ -3124,7 +3200,7 @@ void standard___collection___array___ArraySet___add(val_t p0, val_t p1){
     REGB0 = TAG_Bool(ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0])!=NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 460);
+      nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 467);
     }
     fra.me.REG[0] = ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0]);
     CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
@@ -3132,24 +3208,25 @@ void standard___collection___array___ArraySet___add(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArraySet___is_empty[] = "array::ArraySet::(abstract_collection::Collection::is_empty)";
 val_t standard___collection___array___ArraySet___is_empty(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 462;
+  fra.me.line = 469;
   fra.me.meth = LOCATE_standard___collection___array___ArraySet___is_empty;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:462 */
+  /* ../lib/standard/collection/array.nit:469 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 462);
+    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 469);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0]);
   REGB0 = CALL_standard___collection___abstract_collection___Collection___is_empty(fra.me.REG[0])(fra.me.REG[0]);
@@ -3158,24 +3235,25 @@ val_t standard___collection___array___ArraySet___is_empty(val_t p0){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___array___ArraySet___length[] = "array::ArraySet::(abstract_collection::Collection::length)";
 val_t standard___collection___array___ArraySet___length(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 464;
+  fra.me.line = 471;
   fra.me.meth = LOCATE_standard___collection___array___ArraySet___length;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:464 */
+  /* ../lib/standard/collection/array.nit:471 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 464);
+    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 471);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0]);
   /* ../lib/standard/collection/array.nit:24 */
@@ -3185,12 +3263,13 @@ val_t standard___collection___array___ArraySet___length(val_t p0){
     nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
   }
   REGB0 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
-  /* ../lib/standard/collection/array.nit:464 */
+  /* ../lib/standard/collection/array.nit:471 */
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___array___ArraySet___first[] = "array::ArraySet::(abstract_collection::Collection::first)";
 val_t standard___collection___array___ArraySet___first(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -3199,7 +3278,7 @@ val_t standard___collection___array___ArraySet___first(val_t p0){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 466;
+  fra.me.line = 473;
   fra.me.meth = LOCATE_standard___collection___array___ArraySet___first;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -3207,11 +3286,11 @@ val_t standard___collection___array___ArraySet___first(val_t p0){
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:468 */
+  /* ../lib/standard/collection/array.nit:475 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 468);
+    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 475);
   }
   fra.me.REG[1] = ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0]);
   /* ../lib/standard/collection/array.nit:24 */
@@ -3221,25 +3300,25 @@ val_t standard___collection___array___ArraySet___first(val_t p0){
     nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
   }
   REGB0 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[1]);
-  /* ../lib/standard/collection/array.nit:468 */
+  /* ../lib/standard/collection/array.nit:475 */
   REGB1 = TAG_Int(0);
   REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
   if (UNTAG_Bool(REGB2)) {
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:234 */
+  /* ../lib/standard/kernel.nit:244 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB0)>UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:468 */
+  /* ../lib/standard/collection/array.nit:475 */
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Assert failed", NULL, LOCATE_standard___collection___array, 468);
+    nit_abort("Assert failed", NULL, LOCATE_standard___collection___array, 475);
   }
-  /* ../lib/standard/collection/array.nit:469 */
+  /* ../lib/standard/collection/array.nit:476 */
   REGB1 = TAG_Bool(ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 469);
+    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 476);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0]);
   fra.me.REG[0] = CALL_standard___collection___abstract_collection___Collection___first(fra.me.REG[0])(fra.me.REG[0]);
@@ -3248,6 +3327,7 @@ val_t standard___collection___array___ArraySet___first(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___array___ArraySet___remove[] = "array::ArraySet::(abstract_collection::RemovableCollection::remove)";
 void standard___collection___array___ArraySet___remove(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -3256,7 +3336,7 @@ void standard___collection___array___ArraySet___remove(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 472;
+  fra.me.line = 479;
   fra.me.meth = LOCATE_standard___collection___array___ArraySet___remove;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
@@ -3266,36 +3346,37 @@ void standard___collection___array___ArraySet___remove(val_t p0, val_t p1){
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:474 */
+  /* ../lib/standard/collection/array.nit:481 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 474);
+    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 481);
   }
   fra.me.REG[2] = ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0]);
   REGB0 = CALL_standard___collection___abstract_collection___SequenceRead___index_of(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-  /* ../lib/standard/collection/array.nit:475 */
+  /* ../lib/standard/collection/array.nit:482 */
   REGB1 = TAG_Int(0);
   REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
   if (UNTAG_Bool(REGB2)) {
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:233 */
+  /* ../lib/standard/kernel.nit:243 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:475 */
+  /* ../lib/standard/collection/array.nit:482 */
   if (UNTAG_Bool(REGB1)) {
     CALL_standard___collection___array___ArraySet___remove_at(fra.me.REG[0])(fra.me.REG[0], REGB0);
   }
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArraySet___remove_all[] = "array::ArraySet::(abstract_collection::RemovableCollection::remove_all)";
 void standard___collection___array___ArraySet___remove_all(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 478;
+  fra.me.line = 485;
   fra.me.meth = LOCATE_standard___collection___array___ArraySet___remove_all;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -3304,53 +3385,55 @@ void standard___collection___array___ArraySet___remove_all(val_t p0, val_t p1){
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:478 */
+  /* ../lib/standard/collection/array.nit:485 */
   CALL_standard___collection___abstract_collection___RemovableCollection___remove(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArraySet___clear[] = "array::ArraySet::(abstract_collection::RemovableCollection::clear)";
 void standard___collection___array___ArraySet___clear(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 480;
+  fra.me.line = 487;
   fra.me.meth = LOCATE_standard___collection___array___ArraySet___clear;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:480 */
+  /* ../lib/standard/collection/array.nit:487 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 480);
+    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 487);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0]);
   CALL_standard___collection___abstract_collection___RemovableCollection___clear(fra.me.REG[0])(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArraySet___iterator[] = "array::ArraySet::(abstract_collection::Collection::iterator)";
 val_t standard___collection___array___ArraySet___iterator(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 482;
+  fra.me.line = 489;
   fra.me.meth = LOCATE_standard___collection___array___ArraySet___iterator;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:482 */
+  /* ../lib/standard/collection/array.nit:489 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 482);
+    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 489);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0]);
   fra.me.REG[0] = CALL_standard___collection___abstract_collection___Collection___iterator(fra.me.REG[0])(fra.me.REG[0]);
@@ -3360,6 +3443,7 @@ val_t standard___collection___array___ArraySet___iterator(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___array___ArraySet___enlarge[] = "array::ArraySet::enlarge";
 void standard___collection___array___ArraySet___enlarge(val_t p0, val_t p1){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -3367,7 +3451,7 @@ void standard___collection___array___ArraySet___enlarge(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 484;
+  fra.me.line = 491;
   fra.me.meth = LOCATE_standard___collection___array___ArraySet___enlarge;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
@@ -3375,17 +3459,18 @@ void standard___collection___array___ArraySet___enlarge(val_t p0, val_t p1){
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
   REGB0 = p1;
-  /* ../lib/standard/collection/array.nit:485 */
+  /* ../lib/standard/collection/array.nit:492 */
   REGB1 = TAG_Bool(ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 485);
+    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 492);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0]);
   CALL_standard___collection___array___AbstractArray___enlarge(fra.me.REG[0])(fra.me.REG[0], REGB0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArraySet___remove_at[] = "array::ArraySet::remove_at";
 void standard___collection___array___ArraySet___remove_at(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -3393,7 +3478,7 @@ void standard___collection___array___ArraySet___remove_at(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 487;
+  fra.me.line = 494;
   fra.me.meth = LOCATE_standard___collection___array___ArraySet___remove_at;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
@@ -3403,40 +3488,41 @@ void standard___collection___array___ArraySet___remove_at(val_t p0, val_t p1){
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   REGB0 = p1;
-  /* ../lib/standard/collection/array.nit:489 */
+  /* ../lib/standard/collection/array.nit:496 */
   REGB1 = TAG_Bool(ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 489);
+    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 496);
   }
   fra.me.REG[1] = ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0]);
   REGB1 = TAG_Bool(ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 489);
+    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 496);
   }
   fra.me.REG[2] = ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0]);
   fra.me.REG[2] = CALL_standard___collection___abstract_collection___SequenceRead___last(fra.me.REG[2])(fra.me.REG[2]);
   CALL_standard___collection___abstract_collection___Sequence_____braeq(fra.me.REG[1])(fra.me.REG[1], REGB0, fra.me.REG[2]);
-  /* ../lib/standard/collection/array.nit:490 */
+  /* ../lib/standard/collection/array.nit:497 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 490);
+    nit_abort("Uninitialized attribute %s", "_array", LOCATE_standard___collection___array, 497);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0]);
   CALL_standard___collection___abstract_collection___Sequence___pop(fra.me.REG[0])(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArraySet___init[] = "array::ArraySet::init";
 void standard___collection___array___ArraySet___init(val_t p0, int* init_table){
-  int itpos7 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___ArraySet].i;
+  int itpos8 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___ArraySet].i;
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
-  if (init_table[itpos7]) return;
+  if (init_table[itpos8]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 493;
+  fra.me.line = 500;
   fra.me.meth = LOCATE_standard___collection___array___ArraySet___init;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -3444,22 +3530,23 @@ void standard___collection___array___ArraySet___init(val_t p0, int* init_table){
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:494 */
+  /* ../lib/standard/collection/array.nit:501 */
   fra.me.REG[1] = NEW_Array_standard___collection___array___Array___init();
   ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
-  init_table[itpos7] = 1;
+  init_table[itpos8] = 1;
   return;
 }
+static const char LOCATE_standard___collection___array___ArraySet___with_capacity[] = "array::ArraySet::with_capacity";
 void standard___collection___array___ArraySet___with_capacity(val_t p0, val_t p1, int* init_table){
-  int itpos8 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___ArraySet].i;
+  int itpos9 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___ArraySet].i;
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
-  if (init_table[itpos8]) return;
+  if (init_table[itpos9]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 496;
+  fra.me.line = 503;
   fra.me.meth = LOCATE_standard___collection___array___ArraySet___with_capacity;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -3468,31 +3555,32 @@ void standard___collection___array___ArraySet___with_capacity(val_t p0, val_t p1
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   REGB0 = p1;
-  /* ../lib/standard/collection/array.nit:497 */
+  /* ../lib/standard/collection/array.nit:504 */
   fra.me.REG[1] = NEW_Array_standard___collection___array___Array___with_capacity(REGB0);
   ATTR_standard___collection___array___ArraySet____array(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
-  init_table[itpos8] = 1;
+  init_table[itpos9] = 1;
   return;
 }
+static const char LOCATE_standard___collection___array___ArraySetIterator___is_ok[] = "array::ArraySetIterator::(abstract_collection::Iterator::is_ok)";
 val_t standard___collection___array___ArraySetIterator___is_ok(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 504;
+  fra.me.line = 511;
   fra.me.meth = LOCATE_standard___collection___array___ArraySetIterator___is_ok;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:504 */
+  /* ../lib/standard/collection/array.nit:511 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArraySetIterator____iter(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_iter", LOCATE_standard___collection___array, 504);
+    nit_abort("Uninitialized attribute %s", "_iter", LOCATE_standard___collection___array, 511);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArraySetIterator____iter(fra.me.REG[0]);
   REGB0 = CALL_standard___collection___abstract_collection___Iterator___is_ok(fra.me.REG[0])(fra.me.REG[0]);
@@ -3501,48 +3589,50 @@ val_t standard___collection___array___ArraySetIterator___is_ok(val_t p0){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___array___ArraySetIterator___next[] = "array::ArraySetIterator::(abstract_collection::Iterator::next)";
 void standard___collection___array___ArraySetIterator___next(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 506;
+  fra.me.line = 513;
   fra.me.meth = LOCATE_standard___collection___array___ArraySetIterator___next;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:506 */
+  /* ../lib/standard/collection/array.nit:513 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArraySetIterator____iter(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_iter", LOCATE_standard___collection___array, 506);
+    nit_abort("Uninitialized attribute %s", "_iter", LOCATE_standard___collection___array, 513);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArraySetIterator____iter(fra.me.REG[0]);
   CALL_standard___collection___abstract_collection___Iterator___next(fra.me.REG[0])(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArraySetIterator___item[] = "array::ArraySetIterator::(abstract_collection::Iterator::item)";
 val_t standard___collection___array___ArraySetIterator___item(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 508;
+  fra.me.line = 515;
   fra.me.meth = LOCATE_standard___collection___array___ArraySetIterator___item;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:508 */
+  /* ../lib/standard/collection/array.nit:515 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArraySetIterator____iter(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_iter", LOCATE_standard___collection___array, 508);
+    nit_abort("Uninitialized attribute %s", "_iter", LOCATE_standard___collection___array, 515);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArraySetIterator____iter(fra.me.REG[0]);
   fra.me.REG[0] = CALL_standard___collection___abstract_collection___Iterator___item(fra.me.REG[0])(fra.me.REG[0]);
@@ -3551,14 +3641,15 @@ val_t standard___collection___array___ArraySetIterator___item(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___array___ArraySetIterator___init[] = "array::ArraySetIterator::init";
 void standard___collection___array___ArraySetIterator___init(val_t p0, val_t p1, int* init_table){
-  int itpos9 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___ArraySetIterator].i;
+  int itpos10 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___ArraySetIterator].i;
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
-  if (init_table[itpos9]) return;
+  if (init_table[itpos10]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 510;
+  fra.me.line = 517;
   fra.me.meth = LOCATE_standard___collection___array___ArraySetIterator___init;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -3567,12 +3658,13 @@ void standard___collection___array___ArraySetIterator___init(val_t p0, val_t p1,
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:510 */
+  /* ../lib/standard/collection/array.nit:517 */
   ATTR_standard___collection___array___ArraySetIterator____iter(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
-  init_table[itpos9] = 1;
+  init_table[itpos10] = 1;
   return;
 }
+static const char LOCATE_standard___collection___array___ArrayMap_____bra[] = "array::ArrayMap::(abstract_collection::MapRead::[])";
 val_t standard___collection___array___ArrayMap_____bra(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -3581,7 +3673,7 @@ val_t standard___collection___array___ArrayMap_____bra(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 520;
+  fra.me.line = 527;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMap_____bra;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -3590,41 +3682,41 @@ val_t standard___collection___array___ArrayMap_____bra(val_t p0, val_t p1){
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:523 */
+  /* ../lib/standard/collection/array.nit:530 */
   REGB0 = CALL_standard___collection___array___ArrayMap___index(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ../lib/standard/collection/array.nit:524 */
+  /* ../lib/standard/collection/array.nit:531 */
   REGB1 = TAG_Int(0);
   REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
   if (UNTAG_Bool(REGB2)) {
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:233 */
+  /* ../lib/standard/kernel.nit:243 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:524 */
+  /* ../lib/standard/collection/array.nit:531 */
   if (UNTAG_Bool(REGB1)) {
-    /* ../lib/standard/collection/array.nit:525 */
+    /* ../lib/standard/collection/array.nit:532 */
     REGB1 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 525);
+      nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 532);
     }
     fra.me.REG[0] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
-    /* ../lib/standard/collection/array.nit:280 */
+    /* ../lib/standard/collection/array.nit:281 */
     REGB1 = TAG_Int(0);
     REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
     if (UNTAG_Bool(REGB2)) {
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:233 */
+    /* ../lib/standard/kernel.nit:243 */
     REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-    /* ../lib/standard/collection/array.nit:280 */
+    /* ../lib/standard/collection/array.nit:281 */
     if (UNTAG_Bool(REGB1)) {
       REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0])!=NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
+        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 281);
       }
       REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
       REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
@@ -3632,43 +3724,44 @@ val_t standard___collection___array___ArrayMap_____bra(val_t p0, val_t p1){
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ../lib/standard/kernel.nit:232 */
+      /* ../lib/standard/kernel.nit:242 */
       REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
     } else {
-      /* ../lib/standard/collection/array.nit:280 */
-      REGB2 = TAG_Bool(false);
+      /* ../lib/standard/collection/array.nit:281 */
+      REGB2 = TAG_Bool(0);
       REGB1 = REGB2;
     }
     if (UNTAG_Bool(REGB1)) {
     } else {
-      nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
+      nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
     }
-    /* ../lib/standard/collection/array.nit:281 */
+    /* ../lib/standard/collection/array.nit:282 */
     fra.me.REG[0] = ATTR_standard___collection___array___Array____items(fra.me.REG[0]);
     REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
+      nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
     }
-    /* ../lib/standard/collection/array.nit:718 */
+    /* ../lib/standard/collection/array.nit:725 */
     fra.me.REG[0] = ((Nit_NativeArray)fra.me.REG[0])->val[UNTAG_Int(REGB0)];
-    /* ../lib/standard/collection/array.nit:281 */
+    /* ../lib/standard/collection/array.nit:282 */
     goto label1;
     label1: while(0);
-    /* ../lib/standard/collection/array.nit:525 */
+    /* ../lib/standard/collection/array.nit:532 */
     REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 525);
+      nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 532);
     }
     fra.me.REG[0] = CALL_standard___collection___abstract_collection___Couple___second(fra.me.REG[0])(fra.me.REG[0]);
     goto label2;
   } else {
-    /* ../lib/standard/collection/array.nit:527 */
-    nit_abort("Aborted", NULL, LOCATE_standard___collection___array, 527);
+    /* ../lib/standard/collection/array.nit:534 */
+    nit_abort("Aborted", NULL, LOCATE_standard___collection___array, 534);
   }
   label2: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___array___ArrayMap_____braeq[] = "array::ArrayMap::(abstract_collection::Map::[]=)";
 void standard___collection___array___ArrayMap_____braeq(val_t p0, val_t p1, val_t p2){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -3677,7 +3770,7 @@ void standard___collection___array___ArrayMap_____braeq(val_t p0, val_t p1, val_
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 531;
+  fra.me.line = 538;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMap_____braeq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
@@ -3689,41 +3782,41 @@ void standard___collection___array___ArrayMap_____braeq(val_t p0, val_t p1, val_
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   fra.me.REG[2] = p2;
-  /* ../lib/standard/collection/array.nit:534 */
+  /* ../lib/standard/collection/array.nit:541 */
   REGB0 = CALL_standard___collection___array___ArrayMap___index(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ../lib/standard/collection/array.nit:535 */
+  /* ../lib/standard/collection/array.nit:542 */
   REGB1 = TAG_Int(0);
   REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
   if (UNTAG_Bool(REGB2)) {
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:233 */
+  /* ../lib/standard/kernel.nit:243 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:535 */
+  /* ../lib/standard/collection/array.nit:542 */
   if (UNTAG_Bool(REGB1)) {
-    /* ../lib/standard/collection/array.nit:536 */
+    /* ../lib/standard/collection/array.nit:543 */
     REGB1 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 536);
+      nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 543);
     }
     fra.me.REG[3] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
-    /* ../lib/standard/collection/array.nit:280 */
+    /* ../lib/standard/collection/array.nit:281 */
     REGB1 = TAG_Int(0);
     REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
     if (UNTAG_Bool(REGB2)) {
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:233 */
+    /* ../lib/standard/kernel.nit:243 */
     REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-    /* ../lib/standard/collection/array.nit:280 */
+    /* ../lib/standard/collection/array.nit:281 */
     if (UNTAG_Bool(REGB1)) {
       REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3])!=NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
+        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 281);
       }
       REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[3]);
       REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
@@ -3731,40 +3824,40 @@ void standard___collection___array___ArrayMap_____braeq(val_t p0, val_t p1, val_
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ../lib/standard/kernel.nit:232 */
+      /* ../lib/standard/kernel.nit:242 */
       REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
     } else {
-      /* ../lib/standard/collection/array.nit:280 */
-      REGB2 = TAG_Bool(false);
+      /* ../lib/standard/collection/array.nit:281 */
+      REGB2 = TAG_Bool(0);
       REGB1 = REGB2;
     }
     if (UNTAG_Bool(REGB1)) {
     } else {
-      nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
+      nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
     }
-    /* ../lib/standard/collection/array.nit:281 */
+    /* ../lib/standard/collection/array.nit:282 */
     fra.me.REG[3] = ATTR_standard___collection___array___Array____items(fra.me.REG[3]);
     REGB1 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
+      nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
     }
-    /* ../lib/standard/collection/array.nit:718 */
+    /* ../lib/standard/collection/array.nit:725 */
     fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[3])->val[UNTAG_Int(REGB0)];
-    /* ../lib/standard/collection/array.nit:281 */
+    /* ../lib/standard/collection/array.nit:282 */
     goto label1;
     label1: while(0);
-    /* ../lib/standard/collection/array.nit:536 */
+    /* ../lib/standard/collection/array.nit:543 */
     REGB0 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
-      nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 536);
+      nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 543);
     }
     CALL_standard___collection___abstract_collection___Couple___second__eq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[2]);
   } else {
-    /* ../lib/standard/collection/array.nit:538 */
+    /* ../lib/standard/collection/array.nit:545 */
     REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
     if (UNTAG_Bool(REGB0)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 538);
+      nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 545);
     }
     fra.me.REG[0] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
     fra.me.REG[2] = NEW_Couple_standard___collection___abstract_collection___Couple___init(fra.me.REG[1], fra.me.REG[2]);
@@ -3773,35 +3866,37 @@ void standard___collection___array___ArrayMap_____braeq(val_t p0, val_t p1, val_
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArrayMap___keys[] = "array::ArrayMap::(abstract_collection::MapRead::keys)";
 val_t standard___collection___array___ArrayMap___keys(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 542;
+  fra.me.line = 549;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMap___keys;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:542 */
+  /* ../lib/standard/collection/array.nit:549 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayMap_____atkeys(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "@keys", LOCATE_standard___collection___array, 542);
+    nit_abort("Uninitialized attribute %s", "@keys", LOCATE_standard___collection___array, 549);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArrayMap_____atkeys(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___array___ArrayMap___keys__eq[] = "array::ArrayMap::keys=";
 void standard___collection___array___ArrayMap___keys__eq(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 542;
+  fra.me.line = 549;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMap___keys__eq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -3810,40 +3905,42 @@ void standard___collection___array___ArrayMap___keys__eq(val_t p0, val_t p1){
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:542 */
+  /* ../lib/standard/collection/array.nit:549 */
   ATTR_standard___collection___array___ArrayMap_____atkeys(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArrayMap___values[] = "array::ArrayMap::(abstract_collection::MapRead::values)";
 val_t standard___collection___array___ArrayMap___values(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 543;
+  fra.me.line = 550;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMap___values;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:543 */
+  /* ../lib/standard/collection/array.nit:550 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayMap_____atvalues(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "@values", LOCATE_standard___collection___array, 543);
+    nit_abort("Uninitialized attribute %s", "@values", LOCATE_standard___collection___array, 550);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArrayMap_____atvalues(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___array___ArrayMap___values__eq[] = "array::ArrayMap::values=";
 void standard___collection___array___ArrayMap___values__eq(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 543;
+  fra.me.line = 550;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMap___values__eq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -3852,29 +3949,30 @@ void standard___collection___array___ArrayMap___values__eq(val_t p0, val_t p1){
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:543 */
+  /* ../lib/standard/collection/array.nit:550 */
   ATTR_standard___collection___array___ArrayMap_____atvalues(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArrayMap___length[] = "array::ArrayMap::(abstract_collection::MapRead::length)";
 val_t standard___collection___array___ArrayMap___length(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 545;
+  fra.me.line = 552;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMap___length;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:546 */
+  /* ../lib/standard/collection/array.nit:553 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 546);
+    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 553);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
   /* ../lib/standard/collection/array.nit:24 */
@@ -3884,30 +3982,31 @@ val_t standard___collection___array___ArrayMap___length(val_t p0){
     nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
   }
   REGB0 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
-  /* ../lib/standard/collection/array.nit:546 */
+  /* ../lib/standard/collection/array.nit:553 */
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___array___ArrayMap___iterator[] = "array::ArrayMap::(abstract_collection::MapRead::iterator)";
 val_t standard___collection___array___ArrayMap___iterator(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 548;
+  fra.me.line = 555;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMap___iterator;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:548 */
+  /* ../lib/standard/collection/array.nit:555 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 548);
+    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 555);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
   fra.me.REG[0] = CALL_standard___collection___abstract_collection___Collection___iterator(fra.me.REG[0])(fra.me.REG[0]);
@@ -3917,24 +4016,25 @@ val_t standard___collection___array___ArrayMap___iterator(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___array___ArrayMap___is_empty[] = "array::ArrayMap::(abstract_collection::MapRead::is_empty)";
 val_t standard___collection___array___ArrayMap___is_empty(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 550;
+  fra.me.line = 557;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMap___is_empty;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:550 */
+  /* ../lib/standard/collection/array.nit:557 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 550);
+    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 557);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
   REGB0 = CALL_standard___collection___abstract_collection___Collection___is_empty(fra.me.REG[0])(fra.me.REG[0]);
@@ -3943,30 +4043,32 @@ val_t standard___collection___array___ArrayMap___is_empty(val_t p0){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___array___ArrayMap___clear[] = "array::ArrayMap::(abstract_collection::Map::clear)";
 void standard___collection___array___ArrayMap___clear(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 552;
+  fra.me.line = 559;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMap___clear;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:552 */
+  /* ../lib/standard/collection/array.nit:559 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 552);
+    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 559);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
   CALL_standard___collection___abstract_collection___RemovableCollection___clear(fra.me.REG[0])(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArrayMap___enlarge[] = "array::ArrayMap::enlarge";
 void standard___collection___array___ArrayMap___enlarge(val_t p0, val_t p1){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
@@ -3974,7 +4076,7 @@ void standard___collection___array___ArrayMap___enlarge(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 554;
+  fra.me.line = 561;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMap___enlarge;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
@@ -3982,17 +4084,18 @@ void standard___collection___array___ArrayMap___enlarge(val_t p0, val_t p1){
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
   REGB0 = p1;
-  /* ../lib/standard/collection/array.nit:555 */
+  /* ../lib/standard/collection/array.nit:562 */
   REGB1 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 555);
+    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 562);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
   CALL_standard___collection___array___AbstractArray___enlarge(fra.me.REG[0])(fra.me.REG[0], REGB0);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArrayMap___couple_at[] = "array::ArrayMap::(abstract_collection::CoupleMap::couple_at)";
 val_t standard___collection___array___ArrayMap___couple_at(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -4001,7 +4104,7 @@ val_t standard___collection___array___ArrayMap___couple_at(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 557;
+  fra.me.line = 564;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMap___couple_at;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -4010,41 +4113,41 @@ val_t standard___collection___array___ArrayMap___couple_at(val_t p0, val_t p1){
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:559 */
+  /* ../lib/standard/collection/array.nit:566 */
   REGB0 = CALL_standard___collection___array___ArrayMap___index(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
-  /* ../lib/standard/collection/array.nit:560 */
+  /* ../lib/standard/collection/array.nit:567 */
   REGB1 = TAG_Int(0);
   REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
   if (UNTAG_Bool(REGB2)) {
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:233 */
+  /* ../lib/standard/kernel.nit:243 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:560 */
+  /* ../lib/standard/collection/array.nit:567 */
   if (UNTAG_Bool(REGB1)) {
-    /* ../lib/standard/collection/array.nit:561 */
+    /* ../lib/standard/collection/array.nit:568 */
     REGB1 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 561);
+      nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 568);
     }
     fra.me.REG[0] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
-    /* ../lib/standard/collection/array.nit:280 */
+    /* ../lib/standard/collection/array.nit:281 */
     REGB1 = TAG_Int(0);
     REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
     if (UNTAG_Bool(REGB2)) {
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:233 */
+    /* ../lib/standard/kernel.nit:243 */
     REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-    /* ../lib/standard/collection/array.nit:280 */
+    /* ../lib/standard/collection/array.nit:281 */
     if (UNTAG_Bool(REGB1)) {
       REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0])!=NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
+        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 281);
       }
       REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
       REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
@@ -4052,32 +4155,32 @@ val_t standard___collection___array___ArrayMap___couple_at(val_t p0, val_t p1){
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ../lib/standard/kernel.nit:232 */
+      /* ../lib/standard/kernel.nit:242 */
       REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
     } else {
-      /* ../lib/standard/collection/array.nit:280 */
-      REGB2 = TAG_Bool(false);
+      /* ../lib/standard/collection/array.nit:281 */
+      REGB2 = TAG_Bool(0);
       REGB1 = REGB2;
     }
     if (UNTAG_Bool(REGB1)) {
     } else {
-      nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
+      nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
     }
-    /* ../lib/standard/collection/array.nit:281 */
+    /* ../lib/standard/collection/array.nit:282 */
     fra.me.REG[0] = ATTR_standard___collection___array___Array____items(fra.me.REG[0]);
     REGB1 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
+      nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
     }
-    /* ../lib/standard/collection/array.nit:718 */
+    /* ../lib/standard/collection/array.nit:725 */
     fra.me.REG[0] = ((Nit_NativeArray)fra.me.REG[0])->val[UNTAG_Int(REGB0)];
-    /* ../lib/standard/collection/array.nit:281 */
+    /* ../lib/standard/collection/array.nit:282 */
     goto label1;
     label1: while(0);
-    /* ../lib/standard/collection/array.nit:561 */
+    /* ../lib/standard/collection/array.nit:568 */
     goto label2;
   } else {
-    /* ../lib/standard/collection/array.nit:563 */
+    /* ../lib/standard/collection/array.nit:570 */
     fra.me.REG[0] = NIT_NULL;
     goto label2;
   }
@@ -4085,6 +4188,7 @@ val_t standard___collection___array___ArrayMap___couple_at(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___array___ArrayMap___remove_at_index[] = "array::ArrayMap::remove_at_index";
 void standard___collection___array___ArrayMap___remove_at_index(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -4092,7 +4196,7 @@ void standard___collection___array___ArrayMap___remove_at_index(val_t p0, val_t
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 570;
+  fra.me.line = 577;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMap___remove_at_index;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
@@ -4102,32 +4206,33 @@ void standard___collection___array___ArrayMap___remove_at_index(val_t p0, val_t
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   REGB0 = p1;
-  /* ../lib/standard/collection/array.nit:573 */
+  /* ../lib/standard/collection/array.nit:580 */
   REGB1 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 573);
+    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 580);
   }
   fra.me.REG[1] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
   REGB1 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 573);
+    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 580);
   }
   fra.me.REG[2] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
   fra.me.REG[2] = CALL_standard___collection___abstract_collection___SequenceRead___last(fra.me.REG[2])(fra.me.REG[2]);
   CALL_standard___collection___abstract_collection___Sequence_____braeq(fra.me.REG[1])(fra.me.REG[1], REGB0, fra.me.REG[2]);
-  /* ../lib/standard/collection/array.nit:574 */
+  /* ../lib/standard/collection/array.nit:581 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 574);
+    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 581);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
   CALL_standard___collection___abstract_collection___Sequence___pop(fra.me.REG[0])(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArrayMap___index[] = "array::ArrayMap::index";
 val_t standard___collection___array___ArrayMap___index(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -4138,7 +4243,7 @@ val_t standard___collection___array___ArrayMap___index(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 580;
+  fra.me.line = 587;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMap___index;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
@@ -4148,18 +4253,18 @@ val_t standard___collection___array___ArrayMap___index(val_t p0, val_t p1){
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:584 */
+  /* ../lib/standard/collection/array.nit:591 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____last_index(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_last_index", LOCATE_standard___collection___array, 584);
+    nit_abort("Uninitialized attribute %s", "_last_index", LOCATE_standard___collection___array, 591);
   }
   REGB0 = ATTR_standard___collection___array___ArrayMap____last_index(fra.me.REG[0]);
-  /* ../lib/standard/collection/array.nit:585 */
+  /* ../lib/standard/collection/array.nit:592 */
   REGB1 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 585);
+    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 592);
   }
   fra.me.REG[2] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
   /* ../lib/standard/collection/array.nit:24 */
@@ -4174,33 +4279,33 @@ val_t standard___collection___array___ArrayMap___index(val_t p0, val_t p1){
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:232 */
+  /* ../lib/standard/kernel.nit:242 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:585 */
+  /* ../lib/standard/collection/array.nit:592 */
   if (UNTAG_Bool(REGB1)) {
     REGB1 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 585);
+      nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 592);
     }
     fra.me.REG[2] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
-    /* ../lib/standard/collection/array.nit:278 */
+    /* ../lib/standard/collection/array.nit:279 */
     REGB1 = REGB0;
-    /* ../lib/standard/collection/array.nit:280 */
+    /* ../lib/standard/collection/array.nit:281 */
     REGB2 = TAG_Int(0);
     REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
     if (UNTAG_Bool(REGB3)) {
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:233 */
+    /* ../lib/standard/kernel.nit:243 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB1)>=UNTAG_Int(REGB2));
-    /* ../lib/standard/collection/array.nit:280 */
+    /* ../lib/standard/collection/array.nit:281 */
     if (UNTAG_Bool(REGB2)) {
       REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
+        nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 281);
       }
       REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
       REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
@@ -4208,32 +4313,32 @@ val_t standard___collection___array___ArrayMap___index(val_t p0, val_t p1){
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ../lib/standard/kernel.nit:232 */
+      /* ../lib/standard/kernel.nit:242 */
       REGB2 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB2));
     } else {
-      /* ../lib/standard/collection/array.nit:280 */
-      REGB3 = TAG_Bool(false);
+      /* ../lib/standard/collection/array.nit:281 */
+      REGB3 = TAG_Bool(0);
       REGB2 = REGB3;
     }
     if (UNTAG_Bool(REGB2)) {
     } else {
-      nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
+      nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
     }
-    /* ../lib/standard/collection/array.nit:281 */
+    /* ../lib/standard/collection/array.nit:282 */
     fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[2]);
     REGB2 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB2)) {
-      nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
+      nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
     }
-    /* ../lib/standard/collection/array.nit:718 */
+    /* ../lib/standard/collection/array.nit:725 */
     fra.me.REG[2] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB1)];
-    /* ../lib/standard/collection/array.nit:281 */
+    /* ../lib/standard/collection/array.nit:282 */
     goto label1;
     label1: while(0);
-    /* ../lib/standard/collection/array.nit:585 */
+    /* ../lib/standard/collection/array.nit:592 */
     REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
     if (UNTAG_Bool(REGB1)) {
-      nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 585);
+      nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 592);
     }
     fra.me.REG[2] = CALL_standard___collection___abstract_collection___Couple___first(fra.me.REG[2])(fra.me.REG[2]);
     REGB1 = TAG_Bool(IS_EQUAL_ON(fra.me.REG[1],fra.me.REG[2]));
@@ -4241,7 +4346,7 @@ val_t standard___collection___array___ArrayMap___index(val_t p0, val_t p1){
     } else {
       REGB2 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
-        REGB2 = TAG_Bool(false);
+        REGB2 = TAG_Bool(0);
         REGB1 = REGB2;
       } else {
         REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
@@ -4249,20 +4354,20 @@ val_t standard___collection___array___ArrayMap___index(val_t p0, val_t p1){
       }
     }
   } else {
-    REGB2 = TAG_Bool(false);
+    REGB2 = TAG_Bool(0);
     REGB1 = REGB2;
   }
   if (UNTAG_Bool(REGB1)) {
     goto label2;
   }
-  /* ../lib/standard/collection/array.nit:587 */
+  /* ../lib/standard/collection/array.nit:594 */
   REGB1 = TAG_Int(0);
-  /* ../lib/standard/collection/array.nit:588 */
+  /* ../lib/standard/collection/array.nit:595 */
   while(1) {
     REGB2 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
     if (UNTAG_Bool(REGB2)) {
     } else {
-      nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 588);
+      nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 595);
     }
     fra.me.REG[2] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
     /* ../lib/standard/collection/array.nit:24 */
@@ -4277,34 +4382,34 @@ val_t standard___collection___array___ArrayMap___index(val_t p0, val_t p1){
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:242 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB2));
-    /* ../lib/standard/collection/array.nit:588 */
+    /* ../lib/standard/collection/array.nit:595 */
     if (UNTAG_Bool(REGB2)) {
-      /* ../lib/standard/collection/array.nit:589 */
+      /* ../lib/standard/collection/array.nit:596 */
       REGB2 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 589);
+        nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 596);
       }
       fra.me.REG[2] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
-      /* ../lib/standard/collection/array.nit:278 */
+      /* ../lib/standard/collection/array.nit:279 */
       REGB2 = REGB1;
-      /* ../lib/standard/collection/array.nit:280 */
+      /* ../lib/standard/collection/array.nit:281 */
       REGB3 = TAG_Int(0);
       REGB4 = TAG_Bool(VAL_ISA(REGB3, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
       if (UNTAG_Bool(REGB4)) {
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ../lib/standard/kernel.nit:233 */
+      /* ../lib/standard/kernel.nit:243 */
       REGB3 = TAG_Bool(UNTAG_Int(REGB2)>=UNTAG_Int(REGB3));
-      /* ../lib/standard/collection/array.nit:280 */
+      /* ../lib/standard/collection/array.nit:281 */
       if (UNTAG_Bool(REGB3)) {
         REGB3 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
         if (UNTAG_Bool(REGB3)) {
         } else {
-          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
+          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 281);
         }
         REGB3 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
         REGB4 = TAG_Bool(VAL_ISA(REGB3, VTCOLOR_standard___kernel___Comparable___OTHER(REGB2), VTID_standard___kernel___Comparable___OTHER(REGB2))) /*cast OTHER*/;
@@ -4312,32 +4417,32 @@ val_t standard___collection___array___ArrayMap___index(val_t p0, val_t p1){
         } else {
           nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
         }
-        /* ../lib/standard/kernel.nit:232 */
+        /* ../lib/standard/kernel.nit:242 */
         REGB3 = TAG_Bool(UNTAG_Int(REGB2)<UNTAG_Int(REGB3));
       } else {
-        /* ../lib/standard/collection/array.nit:280 */
-        REGB4 = TAG_Bool(false);
+        /* ../lib/standard/collection/array.nit:281 */
+        REGB4 = TAG_Bool(0);
         REGB3 = REGB4;
       }
       if (UNTAG_Bool(REGB3)) {
       } else {
-        nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
+        nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
       }
-      /* ../lib/standard/collection/array.nit:281 */
+      /* ../lib/standard/collection/array.nit:282 */
       fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[2]);
       REGB3 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB3)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
+        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
       }
-      /* ../lib/standard/collection/array.nit:718 */
+      /* ../lib/standard/collection/array.nit:725 */
       fra.me.REG[2] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB2)];
-      /* ../lib/standard/collection/array.nit:281 */
+      /* ../lib/standard/collection/array.nit:282 */
       goto label3;
       label3: while(0);
-      /* ../lib/standard/collection/array.nit:589 */
+      /* ../lib/standard/collection/array.nit:596 */
       REGB2 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 589);
+        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 596);
       }
       fra.me.REG[2] = CALL_standard___collection___abstract_collection___Couple___first(fra.me.REG[2])(fra.me.REG[2]);
       REGB2 = TAG_Bool(IS_EQUAL_ON(fra.me.REG[1],fra.me.REG[2]));
@@ -4345,7 +4450,7 @@ val_t standard___collection___array___ArrayMap___index(val_t p0, val_t p1){
       } else {
         REGB3 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
         if (UNTAG_Bool(REGB3)) {
-          REGB3 = TAG_Bool(false);
+          REGB3 = TAG_Bool(0);
           REGB2 = REGB3;
         } else {
           REGB3 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
@@ -4353,43 +4458,44 @@ val_t standard___collection___array___ArrayMap___index(val_t p0, val_t p1){
         }
       }
       if (UNTAG_Bool(REGB2)) {
-        /* ../lib/standard/collection/array.nit:590 */
+        /* ../lib/standard/collection/array.nit:597 */
         ATTR_standard___collection___array___ArrayMap____last_index(fra.me.REG[0]) = REGB1;
-        /* ../lib/standard/collection/array.nit:591 */
+        /* ../lib/standard/collection/array.nit:598 */
         REGB0 = REGB1;
         goto label2;
       }
-      /* ../lib/standard/collection/array.nit:593 */
+      /* ../lib/standard/collection/array.nit:600 */
       REGB2 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:245 */
       REGB2 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB2));
-      /* ../lib/standard/collection/array.nit:593 */
+      /* ../lib/standard/collection/array.nit:600 */
       REGB1 = REGB2;
     } else {
-      /* ../lib/standard/collection/array.nit:588 */
+      /* ../lib/standard/collection/array.nit:595 */
       goto label4;
     }
   }
   label4: while(0);
-  /* ../lib/standard/collection/array.nit:595 */
+  /* ../lib/standard/collection/array.nit:602 */
   REGB1 = TAG_Int(1);
-  /* ../lib/standard/kernel.nit:236 */
+  /* ../lib/standard/kernel.nit:246 */
   REGB1 = TAG_Int(-UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:595 */
+  /* ../lib/standard/collection/array.nit:602 */
   REGB0 = REGB1;
   goto label2;
   label2: while(0);
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___array___ArrayMap___init[] = "array::ArrayMap::init";
 void standard___collection___array___ArrayMap___init(val_t p0, int* init_table){
-  int itpos10 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___ArrayMap].i;
+  int itpos11 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___ArrayMap].i;
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
-  if (init_table[itpos10]) return;
+  if (init_table[itpos11]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 598;
+  fra.me.line = 605;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMap___init;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -4397,42 +4503,44 @@ void standard___collection___array___ArrayMap___init(val_t p0, int* init_table){
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:601 */
+  /* ../lib/standard/collection/array.nit:608 */
   fra.me.REG[1] = NEW_Array_standard___collection___array___Array___init();
   ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
-  init_table[itpos10] = 1;
+  init_table[itpos11] = 1;
   return;
 }
+static const char LOCATE_standard___collection___array___ArrayMapKeys___map[] = "array::ArrayMapKeys::map";
 val_t standard___collection___array___ArrayMapKeys___map(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 607;
+  fra.me.line = 614;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapKeys___map;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:607 */
+  /* ../lib/standard/collection/array.nit:614 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayMapKeys_____atmap(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "@map", LOCATE_standard___collection___array, 607);
+    nit_abort("Uninitialized attribute %s", "@map", LOCATE_standard___collection___array, 614);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArrayMapKeys_____atmap(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___array___ArrayMapKeys___map__eq[] = "array::ArrayMapKeys::map=";
 void standard___collection___array___ArrayMapKeys___map__eq(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 607;
+  fra.me.line = 614;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapKeys___map__eq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -4441,11 +4549,12 @@ void standard___collection___array___ArrayMapKeys___map__eq(val_t p0, val_t p1){
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:607 */
+  /* ../lib/standard/collection/array.nit:614 */
   ATTR_standard___collection___array___ArrayMapKeys_____atmap(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArrayMapKeys___count[] = "array::ArrayMapKeys::(abstract_collection::Collection::count)";
 val_t standard___collection___array___ArrayMapKeys___count(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -4453,7 +4562,7 @@ val_t standard___collection___array___ArrayMapKeys___count(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 609;
+  fra.me.line = 616;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapKeys___count;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -4462,7 +4571,7 @@ val_t standard___collection___array___ArrayMapKeys___count(val_t p0, val_t p1){
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:609 */
+  /* ../lib/standard/collection/array.nit:616 */
   REGB0 = CALL_standard___collection___abstract_collection___Collection___has(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
   if (UNTAG_Bool(REGB0)) {
     REGB0 = TAG_Int(1);
@@ -4476,31 +4585,32 @@ val_t standard___collection___array___ArrayMapKeys___count(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___array___ArrayMapKeys___first[] = "array::ArrayMapKeys::(abstract_collection::Collection::first)";
 val_t standard___collection___array___ArrayMapKeys___first(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 610;
+  fra.me.line = 617;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapKeys___first;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:610 */
+  /* ../lib/standard/collection/array.nit:617 */
   fra.me.REG[0] = CALL_standard___collection___array___ArrayMapKeys___map(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 610);
+    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 617);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
   fra.me.REG[0] = CALL_standard___collection___abstract_collection___Collection___first(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 610);
+    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 617);
   }
   fra.me.REG[0] = CALL_standard___collection___abstract_collection___Couple___first(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
@@ -4508,6 +4618,7 @@ val_t standard___collection___array___ArrayMapKeys___first(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___array___ArrayMapKeys___has[] = "array::ArrayMapKeys::(abstract_collection::Collection::has)";
 val_t standard___collection___array___ArrayMapKeys___has(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -4516,7 +4627,7 @@ val_t standard___collection___array___ArrayMapKeys___has(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 611;
+  fra.me.line = 618;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapKeys___has;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -4525,7 +4636,7 @@ val_t standard___collection___array___ArrayMapKeys___has(val_t p0, val_t p1){
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:611 */
+  /* ../lib/standard/collection/array.nit:618 */
   fra.me.REG[0] = CALL_standard___collection___array___ArrayMapKeys___map(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_standard___collection___array___ArrayMap___index(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
   REGB1 = TAG_Int(0);
@@ -4534,14 +4645,15 @@ val_t standard___collection___array___ArrayMapKeys___has(val_t p0, val_t p1){
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:233 */
+  /* ../lib/standard/kernel.nit:243 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:611 */
+  /* ../lib/standard/collection/array.nit:618 */
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return REGB1;
 }
+static const char LOCATE_standard___collection___array___ArrayMapKeys___has_only[] = "array::ArrayMapKeys::(abstract_collection::Collection::has_only)";
 val_t standard___collection___array___ArrayMapKeys___has_only(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
@@ -4550,7 +4662,7 @@ val_t standard___collection___array___ArrayMapKeys___has_only(val_t p0, val_t p1
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 612;
+  fra.me.line = 619;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapKeys___has_only;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -4559,7 +4671,7 @@ val_t standard___collection___array___ArrayMapKeys___has_only(val_t p0, val_t p1
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:612 */
+  /* ../lib/standard/collection/array.nit:619 */
   REGB0 = CALL_standard___collection___abstract_collection___Collection___has(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
   if (UNTAG_Bool(REGB0)) {
     REGB0 = CALL_standard___collection___abstract_collection___Collection___length(fra.me.REG[0])(fra.me.REG[0]);
@@ -4567,17 +4679,17 @@ val_t standard___collection___array___ArrayMapKeys___has_only(val_t p0, val_t p1
     REGB2 = TAG_Bool(IS_EQUAL_OO(REGB0,REGB1));
     if (UNTAG_Bool(REGB2)) {
     } else {
-      /* ../lib/standard/kernel.nit:227 */
+      /* ../lib/standard/kernel.nit:237 */
       REGB1 = TAG_Bool((REGB0)==(REGB1));
-      /* ../lib/standard/collection/array.nit:612 */
+      /* ../lib/standard/collection/array.nit:619 */
       REGB2 = REGB1;
     }
   } else {
-    REGB1 = TAG_Bool(false);
+    REGB1 = TAG_Bool(0);
     REGB2 = REGB1;
   }
   if (UNTAG_Bool(REGB2)) {
-    REGB2 = TAG_Bool(true);
+    REGB2 = TAG_Bool(1);
   } else {
     REGB1 = CALL_standard___collection___abstract_collection___Collection___is_empty(fra.me.REG[0])(fra.me.REG[0]);
     REGB2 = REGB1;
@@ -4587,20 +4699,21 @@ val_t standard___collection___array___ArrayMapKeys___has_only(val_t p0, val_t p1
   stack_frame_head = fra.me.prev;
   return REGB2;
 }
+static const char LOCATE_standard___collection___array___ArrayMapKeys___is_empty[] = "array::ArrayMapKeys::(abstract_collection::Collection::is_empty)";
 val_t standard___collection___array___ArrayMapKeys___is_empty(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 613;
+  fra.me.line = 620;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapKeys___is_empty;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:613 */
+  /* ../lib/standard/collection/array.nit:620 */
   fra.me.REG[0] = CALL_standard___collection___array___ArrayMapKeys___map(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_standard___collection___abstract_collection___MapRead___is_empty(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
@@ -4608,20 +4721,21 @@ val_t standard___collection___array___ArrayMapKeys___is_empty(val_t p0){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___array___ArrayMapKeys___length[] = "array::ArrayMapKeys::(abstract_collection::Collection::length)";
 val_t standard___collection___array___ArrayMapKeys___length(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 614;
+  fra.me.line = 621;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapKeys___length;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:614 */
+  /* ../lib/standard/collection/array.nit:621 */
   fra.me.REG[0] = CALL_standard___collection___array___ArrayMapKeys___map(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_standard___collection___abstract_collection___MapRead___length(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
@@ -4629,19 +4743,20 @@ val_t standard___collection___array___ArrayMapKeys___length(val_t p0){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___array___ArrayMapKeys___iterator[] = "array::ArrayMapKeys::(abstract_collection::Collection::iterator)";
 val_t standard___collection___array___ArrayMapKeys___iterator(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 615;
+  fra.me.line = 622;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapKeys___iterator;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:615 */
+  /* ../lib/standard/collection/array.nit:622 */
   fra.me.REG[0] = CALL_standard___collection___array___ArrayMapKeys___map(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[0] = CALL_standard___collection___abstract_collection___MapRead___iterator(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[0] = NEW_MapKeysIterator_standard___collection___abstract_collection___MapKeysIterator___init(fra.me.REG[0]);
@@ -4650,24 +4765,26 @@ val_t standard___collection___array___ArrayMapKeys___iterator(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___array___ArrayMapKeys___clear[] = "array::ArrayMapKeys::(abstract_collection::RemovableCollection::clear)";
 void standard___collection___array___ArrayMapKeys___clear(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 616;
+  fra.me.line = 623;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapKeys___clear;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:616 */
+  /* ../lib/standard/collection/array.nit:623 */
   fra.me.REG[0] = CALL_standard___collection___array___ArrayMapKeys___map(fra.me.REG[0])(fra.me.REG[0]);
   CALL_standard___collection___abstract_collection___Map___clear(fra.me.REG[0])(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArrayMapKeys___remove[] = "array::ArrayMapKeys::(abstract_collection::RemovableCollection::remove)";
 void standard___collection___array___ArrayMapKeys___remove(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -4676,7 +4793,7 @@ void standard___collection___array___ArrayMapKeys___remove(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 617;
+  fra.me.line = 624;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapKeys___remove;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
@@ -4686,19 +4803,19 @@ void standard___collection___array___ArrayMapKeys___remove(val_t p0, val_t p1){
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:619 */
+  /* ../lib/standard/collection/array.nit:626 */
   fra.me.REG[2] = CALL_standard___collection___array___ArrayMapKeys___map(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_standard___collection___array___ArrayMap___index(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
-  /* ../lib/standard/collection/array.nit:620 */
+  /* ../lib/standard/collection/array.nit:627 */
   REGB1 = TAG_Int(0);
   REGB2 = TAG_Bool(VAL_ISA(REGB1, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
   if (UNTAG_Bool(REGB2)) {
   } else {
     nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
   }
-  /* ../lib/standard/kernel.nit:233 */
+  /* ../lib/standard/kernel.nit:243 */
   REGB1 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:620 */
+  /* ../lib/standard/collection/array.nit:627 */
   if (UNTAG_Bool(REGB1)) {
     fra.me.REG[0] = CALL_standard___collection___array___ArrayMapKeys___map(fra.me.REG[0])(fra.me.REG[0]);
     CALL_standard___collection___array___ArrayMap___remove_at_index(fra.me.REG[0])(fra.me.REG[0], REGB0);
@@ -4706,12 +4823,13 @@ void standard___collection___array___ArrayMapKeys___remove(val_t p0, val_t p1){
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArrayMapKeys___remove_all[] = "array::ArrayMapKeys::(abstract_collection::RemovableCollection::remove_all)";
 void standard___collection___array___ArrayMapKeys___remove_all(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 622;
+  fra.me.line = 629;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapKeys___remove_all;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -4720,16 +4838,17 @@ void standard___collection___array___ArrayMapKeys___remove_all(val_t p0, val_t p
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:622 */
+  /* ../lib/standard/collection/array.nit:629 */
   CALL_standard___collection___abstract_collection___RemovableCollection___remove(fra.me.REG[0])(fra.me.REG[0], fra.me.REG[1]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArrayMapKeys___init[] = "array::ArrayMapKeys::init";
 void standard___collection___array___ArrayMapKeys___init(val_t p0, val_t p1, int* init_table){
-  int itpos11 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___ArrayMapKeys].i;
+  int itpos12 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___ArrayMapKeys].i;
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
-  if (init_table[itpos11]) return;
+  if (init_table[itpos12]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
   fra.me.line = 0;
@@ -4743,38 +4862,40 @@ void standard___collection___array___ArrayMapKeys___init(val_t p0, val_t p1, int
   fra.me.REG[1] = p1;
   ATTR_standard___collection___array___ArrayMapKeys_____atmap(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
-  init_table[itpos11] = 1;
+  init_table[itpos12] = 1;
   return;
 }
+static const char LOCATE_standard___collection___array___ArrayMapValues___map[] = "array::ArrayMapValues::map";
 val_t standard___collection___array___ArrayMapValues___map(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 627;
+  fra.me.line = 634;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapValues___map;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:627 */
+  /* ../lib/standard/collection/array.nit:634 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayMapValues_____atmap(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "@map", LOCATE_standard___collection___array, 627);
+    nit_abort("Uninitialized attribute %s", "@map", LOCATE_standard___collection___array, 634);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArrayMapValues_____atmap(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___array___ArrayMapValues___map__eq[] = "array::ArrayMapValues::map=";
 void standard___collection___array___ArrayMapValues___map__eq(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 627;
+  fra.me.line = 634;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapValues___map__eq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -4783,57 +4904,59 @@ void standard___collection___array___ArrayMapValues___map__eq(val_t p0, val_t p1
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:627 */
+  /* ../lib/standard/collection/array.nit:634 */
   ATTR_standard___collection___array___ArrayMapValues_____atmap(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArrayMapValues___first[] = "array::ArrayMapValues::(abstract_collection::Collection::first)";
 val_t standard___collection___array___ArrayMapValues___first(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 629;
+  fra.me.line = 636;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapValues___first;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:629 */
+  /* ../lib/standard/collection/array.nit:636 */
   fra.me.REG[0] = CALL_standard___collection___array___ArrayMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 629);
+    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 636);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
   fra.me.REG[0] = CALL_standard___collection___abstract_collection___Collection___first(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = TAG_Bool(fra.me.REG[0]==NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
-    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 629);
+    nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 636);
   }
-  fra.me.REG[0] = CALL_standard___collection___abstract_collection___Couple___first(fra.me.REG[0])(fra.me.REG[0]);
+  fra.me.REG[0] = CALL_standard___collection___abstract_collection___Couple___second(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___array___ArrayMapValues___is_empty[] = "array::ArrayMapValues::(abstract_collection::Collection::is_empty)";
 val_t standard___collection___array___ArrayMapValues___is_empty(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 630;
+  fra.me.line = 637;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapValues___is_empty;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:630 */
+  /* ../lib/standard/collection/array.nit:637 */
   fra.me.REG[0] = CALL_standard___collection___array___ArrayMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_standard___collection___abstract_collection___MapRead___is_empty(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
@@ -4841,20 +4964,21 @@ val_t standard___collection___array___ArrayMapValues___is_empty(val_t p0){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___array___ArrayMapValues___length[] = "array::ArrayMapValues::(abstract_collection::Collection::length)";
 val_t standard___collection___array___ArrayMapValues___length(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 631;
+  fra.me.line = 638;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapValues___length;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:631 */
+  /* ../lib/standard/collection/array.nit:638 */
   fra.me.REG[0] = CALL_standard___collection___array___ArrayMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = CALL_standard___collection___abstract_collection___MapRead___length(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
@@ -4862,19 +4986,20 @@ val_t standard___collection___array___ArrayMapValues___length(val_t p0){
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___array___ArrayMapValues___iterator[] = "array::ArrayMapValues::(abstract_collection::Collection::iterator)";
 val_t standard___collection___array___ArrayMapValues___iterator(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 632;
+  fra.me.line = 639;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapValues___iterator;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:632 */
+  /* ../lib/standard/collection/array.nit:639 */
   fra.me.REG[0] = CALL_standard___collection___array___ArrayMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[0] = CALL_standard___collection___abstract_collection___MapRead___iterator(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[0] = NEW_MapValuesIterator_standard___collection___abstract_collection___MapValuesIterator___init(fra.me.REG[0]);
@@ -4883,6 +5008,7 @@ val_t standard___collection___array___ArrayMapValues___iterator(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___array___ArrayMapValues___has[] = "array::ArrayMapValues::(abstract_collection::Collection::has)";
 val_t standard___collection___array___ArrayMapValues___has(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -4891,7 +5017,7 @@ val_t standard___collection___array___ArrayMapValues___has(val_t p0, val_t p1){
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 634;
+  fra.me.line = 641;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapValues___has;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
@@ -4902,26 +5028,26 @@ val_t standard___collection___array___ArrayMapValues___has(val_t p0, val_t p1){
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:637 */
+  /* ../lib/standard/collection/array.nit:644 */
   fra.me.REG[0] = CALL_standard___collection___array___ArrayMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 637);
+    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 644);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
-  /* ../lib/standard/collection/array.nit:269 */
-  REGB0 = TAG_Int(0);
   /* ../lib/standard/collection/array.nit:270 */
+  REGB0 = TAG_Int(0);
+  /* ../lib/standard/collection/array.nit:271 */
   REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
+    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 271);
   }
   REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
-  /* ../lib/standard/collection/array.nit:271 */
-  fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[0]);
   /* ../lib/standard/collection/array.nit:272 */
+  fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[0]);
+  /* ../lib/standard/collection/array.nit:273 */
   while(1) {
     /* ../lib/standard/collection/array.nit:24 */
     REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0])!=NIT_NULL);
@@ -4935,25 +5061,25 @@ val_t standard___collection___array___ArrayMapValues___has(val_t p0, val_t p1){
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:242 */
     REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-    /* ../lib/standard/collection/array.nit:272 */
+    /* ../lib/standard/collection/array.nit:273 */
     if (UNTAG_Bool(REGB1)) {
-      /* ../lib/standard/collection/array.nit:273 */
+      /* ../lib/standard/collection/array.nit:274 */
       REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
+        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 274);
       }
-      /* ../lib/standard/collection/array.nit:718 */
+      /* ../lib/standard/collection/array.nit:725 */
       fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB0)];
-      /* ../lib/standard/collection/array.nit:637 */
+      /* ../lib/standard/collection/array.nit:644 */
       fra.me.REG[3] = CALL_standard___collection___abstract_collection___Couple___second(fra.me.REG[3])(fra.me.REG[3]);
       REGB1 = TAG_Bool(IS_EQUAL_NN(fra.me.REG[3],fra.me.REG[1]));
       if (UNTAG_Bool(REGB1)) {
       } else {
         REGB2 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
         if (UNTAG_Bool(REGB2)) {
-          REGB2 = TAG_Bool(false);
+          REGB2 = TAG_Bool(0);
           REGB1 = REGB2;
         } else {
           REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1]);
@@ -4961,29 +5087,30 @@ val_t standard___collection___array___ArrayMapValues___has(val_t p0, val_t p1){
         }
       }
       if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(true);
+        REGB1 = TAG_Bool(1);
         goto label1;
       }
-      /* ../lib/standard/collection/array.nit:274 */
+      /* ../lib/standard/collection/array.nit:275 */
       REGB2 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:245 */
       REGB2 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB2));
-      /* ../lib/standard/collection/array.nit:274 */
+      /* ../lib/standard/collection/array.nit:275 */
       REGB0 = REGB2;
     } else {
-      /* ../lib/standard/collection/array.nit:272 */
+      /* ../lib/standard/collection/array.nit:273 */
       goto label2;
     }
   }
   label2: while(0);
-  /* ../lib/standard/collection/array.nit:638 */
-  REGB0 = TAG_Bool(false);
+  /* ../lib/standard/collection/array.nit:645 */
+  REGB0 = TAG_Bool(0);
   REGB1 = REGB0;
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return REGB1;
 }
+static const char LOCATE_standard___collection___array___ArrayMapValues___has_only[] = "array::ArrayMapValues::(abstract_collection::Collection::has_only)";
 val_t standard___collection___array___ArrayMapValues___has_only(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -4992,7 +5119,7 @@ val_t standard___collection___array___ArrayMapValues___has_only(val_t p0, val_t
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 641;
+  fra.me.line = 648;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapValues___has_only;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
@@ -5003,26 +5130,26 @@ val_t standard___collection___array___ArrayMapValues___has_only(val_t p0, val_t
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:644 */
+  /* ../lib/standard/collection/array.nit:651 */
   fra.me.REG[0] = CALL_standard___collection___array___ArrayMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 644);
+    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 651);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
-  /* ../lib/standard/collection/array.nit:269 */
-  REGB0 = TAG_Int(0);
   /* ../lib/standard/collection/array.nit:270 */
+  REGB0 = TAG_Int(0);
+  /* ../lib/standard/collection/array.nit:271 */
   REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
+    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 271);
   }
   REGB1 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
-  /* ../lib/standard/collection/array.nit:271 */
-  fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[0]);
   /* ../lib/standard/collection/array.nit:272 */
+  fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[0]);
+  /* ../lib/standard/collection/array.nit:273 */
   while(1) {
     /* ../lib/standard/collection/array.nit:24 */
     REGB1 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0])!=NIT_NULL);
@@ -5036,25 +5163,25 @@ val_t standard___collection___array___ArrayMapValues___has_only(val_t p0, val_t
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:242 */
     REGB1 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB1));
-    /* ../lib/standard/collection/array.nit:272 */
+    /* ../lib/standard/collection/array.nit:273 */
     if (UNTAG_Bool(REGB1)) {
-      /* ../lib/standard/collection/array.nit:273 */
+      /* ../lib/standard/collection/array.nit:274 */
       REGB1 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB1)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
+        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 274);
       }
-      /* ../lib/standard/collection/array.nit:718 */
+      /* ../lib/standard/collection/array.nit:725 */
       fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB0)];
-      /* ../lib/standard/collection/array.nit:644 */
+      /* ../lib/standard/collection/array.nit:651 */
       fra.me.REG[3] = CALL_standard___collection___abstract_collection___Couple___second(fra.me.REG[3])(fra.me.REG[3]);
       REGB1 = TAG_Bool(IS_EQUAL_NN(fra.me.REG[3],fra.me.REG[1]));
       if (UNTAG_Bool(REGB1)) {
       } else {
         REGB2 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
         if (UNTAG_Bool(REGB2)) {
-          REGB2 = TAG_Bool(false);
+          REGB2 = TAG_Bool(0);
           REGB1 = REGB2;
         } else {
           REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1]);
@@ -5063,29 +5190,30 @@ val_t standard___collection___array___ArrayMapValues___has_only(val_t p0, val_t
       }
       REGB1 = TAG_Bool(!UNTAG_Bool(REGB1));
       if (UNTAG_Bool(REGB1)) {
-        REGB1 = TAG_Bool(false);
+        REGB1 = TAG_Bool(0);
         goto label1;
       }
-      /* ../lib/standard/collection/array.nit:274 */
+      /* ../lib/standard/collection/array.nit:275 */
       REGB2 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:245 */
       REGB2 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB2));
-      /* ../lib/standard/collection/array.nit:274 */
+      /* ../lib/standard/collection/array.nit:275 */
       REGB0 = REGB2;
     } else {
-      /* ../lib/standard/collection/array.nit:272 */
+      /* ../lib/standard/collection/array.nit:273 */
       goto label2;
     }
   }
   label2: while(0);
-  /* ../lib/standard/collection/array.nit:645 */
-  REGB0 = TAG_Bool(true);
+  /* ../lib/standard/collection/array.nit:652 */
+  REGB0 = TAG_Bool(1);
   REGB1 = REGB0;
   goto label1;
   label1: while(0);
   stack_frame_head = fra.me.prev;
   return REGB1;
 }
+static const char LOCATE_standard___collection___array___ArrayMapValues___count[] = "array::ArrayMapValues::(abstract_collection::Collection::count)";
 val_t standard___collection___array___ArrayMapValues___count(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[3];} fra;
   val_t REGB0;
@@ -5095,7 +5223,7 @@ val_t standard___collection___array___ArrayMapValues___count(val_t p0, val_t p1)
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 648;
+  fra.me.line = 655;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapValues___count;
   fra.me.has_broke = 0;
   fra.me.REG_size = 4;
@@ -5106,28 +5234,28 @@ val_t standard___collection___array___ArrayMapValues___count(val_t p0, val_t p1)
   fra.me.REG[3] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:651 */
+  /* ../lib/standard/collection/array.nit:658 */
   REGB0 = TAG_Int(0);
-  /* ../lib/standard/collection/array.nit:652 */
+  /* ../lib/standard/collection/array.nit:659 */
   fra.me.REG[0] = CALL_standard___collection___array___ArrayMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
   REGB1 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB1)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 652);
+    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 659);
   }
   fra.me.REG[0] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
-  /* ../lib/standard/collection/array.nit:269 */
-  REGB1 = TAG_Int(0);
   /* ../lib/standard/collection/array.nit:270 */
+  REGB1 = TAG_Int(0);
+  /* ../lib/standard/collection/array.nit:271 */
   REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB2)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 270);
+    nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 271);
   }
   REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0]);
-  /* ../lib/standard/collection/array.nit:271 */
-  fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[0]);
   /* ../lib/standard/collection/array.nit:272 */
+  fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[0]);
+  /* ../lib/standard/collection/array.nit:273 */
   while(1) {
     /* ../lib/standard/collection/array.nit:24 */
     REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[0])!=NIT_NULL);
@@ -5141,25 +5269,25 @@ val_t standard___collection___array___ArrayMapValues___count(val_t p0, val_t p1)
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:232 */
+    /* ../lib/standard/kernel.nit:242 */
     REGB2 = TAG_Bool(UNTAG_Int(REGB1)<UNTAG_Int(REGB2));
-    /* ../lib/standard/collection/array.nit:272 */
+    /* ../lib/standard/collection/array.nit:273 */
     if (UNTAG_Bool(REGB2)) {
-      /* ../lib/standard/collection/array.nit:273 */
+      /* ../lib/standard/collection/array.nit:274 */
       REGB2 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 273);
+        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 274);
       }
-      /* ../lib/standard/collection/array.nit:718 */
+      /* ../lib/standard/collection/array.nit:725 */
       fra.me.REG[3] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB1)];
-      /* ../lib/standard/collection/array.nit:652 */
+      /* ../lib/standard/collection/array.nit:659 */
       fra.me.REG[3] = CALL_standard___collection___abstract_collection___Couple___second(fra.me.REG[3])(fra.me.REG[3]);
       REGB2 = TAG_Bool(IS_EQUAL_NN(fra.me.REG[3],fra.me.REG[1]));
       if (UNTAG_Bool(REGB2)) {
       } else {
         REGB3 = TAG_Bool(fra.me.REG[3]==NIT_NULL);
         if (UNTAG_Bool(REGB3)) {
-          REGB3 = TAG_Bool(false);
+          REGB3 = TAG_Bool(0);
           REGB2 = REGB3;
         } else {
           REGB3 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[3])(fra.me.REG[3], fra.me.REG[1]);
@@ -5168,47 +5296,49 @@ val_t standard___collection___array___ArrayMapValues___count(val_t p0, val_t p1)
       }
       if (UNTAG_Bool(REGB2)) {
         REGB2 = TAG_Int(1);
-        /* ../lib/standard/kernel.nit:235 */
+        /* ../lib/standard/kernel.nit:245 */
         REGB2 = TAG_Int(UNTAG_Int(REGB0)+UNTAG_Int(REGB2));
-        /* ../lib/standard/collection/array.nit:652 */
+        /* ../lib/standard/collection/array.nit:659 */
         REGB0 = REGB2;
       }
-      /* ../lib/standard/collection/array.nit:274 */
+      /* ../lib/standard/collection/array.nit:275 */
       REGB2 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:235 */
+      /* ../lib/standard/kernel.nit:245 */
       REGB2 = TAG_Int(UNTAG_Int(REGB1)+UNTAG_Int(REGB2));
-      /* ../lib/standard/collection/array.nit:274 */
+      /* ../lib/standard/collection/array.nit:275 */
       REGB1 = REGB2;
     } else {
-      /* ../lib/standard/collection/array.nit:272 */
+      /* ../lib/standard/collection/array.nit:273 */
       goto label1;
     }
   }
   label1: while(0);
-  /* ../lib/standard/collection/array.nit:653 */
+  /* ../lib/standard/collection/array.nit:660 */
   goto label2;
   label2: while(0);
   stack_frame_head = fra.me.prev;
   return REGB0;
 }
+static const char LOCATE_standard___collection___array___ArrayMapValues___clear[] = "array::ArrayMapValues::(abstract_collection::RemovableCollection::clear)";
 void standard___collection___array___ArrayMapValues___clear(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 656;
+  fra.me.line = 663;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapValues___clear;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:656 */
+  /* ../lib/standard/collection/array.nit:663 */
   fra.me.REG[0] = CALL_standard___collection___array___ArrayMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
   CALL_standard___collection___abstract_collection___Map___clear(fra.me.REG[0])(fra.me.REG[0]);
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArrayMapValues___remove[] = "array::ArrayMapValues::(abstract_collection::RemovableCollection::remove)";
 void standard___collection___array___ArrayMapValues___remove(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -5218,7 +5348,7 @@ void standard___collection___array___ArrayMapValues___remove(val_t p0, val_t p1)
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 658;
+  fra.me.line = 665;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapValues___remove;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
@@ -5228,13 +5358,13 @@ void standard___collection___array___ArrayMapValues___remove(val_t p0, val_t p1)
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:660 */
+  /* ../lib/standard/collection/array.nit:667 */
   fra.me.REG[0] = CALL_standard___collection___array___ArrayMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
-  /* ../lib/standard/collection/array.nit:661 */
+  /* ../lib/standard/collection/array.nit:668 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 661);
+    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 668);
   }
   fra.me.REG[2] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
   /* ../lib/standard/collection/array.nit:24 */
@@ -5244,11 +5374,11 @@ void standard___collection___array___ArrayMapValues___remove(val_t p0, val_t p1)
     nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
   }
   REGB0 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
-  /* ../lib/standard/collection/array.nit:661 */
+  /* ../lib/standard/collection/array.nit:668 */
   REGB1 = TAG_Int(1);
-  /* ../lib/standard/kernel.nit:237 */
+  /* ../lib/standard/kernel.nit:247 */
   REGB1 = TAG_Int(UNTAG_Int(REGB0)-UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:662 */
+  /* ../lib/standard/collection/array.nit:669 */
   while(1) {
     REGB0 = TAG_Int(0);
     REGB2 = TAG_Bool(VAL_ISA(REGB0, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
@@ -5256,34 +5386,34 @@ void standard___collection___array___ArrayMapValues___remove(val_t p0, val_t p1)
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:233 */
+    /* ../lib/standard/kernel.nit:243 */
     REGB0 = TAG_Bool(UNTAG_Int(REGB1)>=UNTAG_Int(REGB0));
-    /* ../lib/standard/collection/array.nit:662 */
+    /* ../lib/standard/collection/array.nit:669 */
     if (UNTAG_Bool(REGB0)) {
-      /* ../lib/standard/collection/array.nit:663 */
+      /* ../lib/standard/collection/array.nit:670 */
       REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
       if (UNTAG_Bool(REGB0)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 663);
+        nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 670);
       }
       fra.me.REG[2] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
-      /* ../lib/standard/collection/array.nit:278 */
+      /* ../lib/standard/collection/array.nit:279 */
       REGB0 = REGB1;
-      /* ../lib/standard/collection/array.nit:280 */
+      /* ../lib/standard/collection/array.nit:281 */
       REGB2 = TAG_Int(0);
       REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
       if (UNTAG_Bool(REGB3)) {
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ../lib/standard/kernel.nit:233 */
+      /* ../lib/standard/kernel.nit:243 */
       REGB2 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB2));
-      /* ../lib/standard/collection/array.nit:280 */
+      /* ../lib/standard/collection/array.nit:281 */
       if (UNTAG_Bool(REGB2)) {
         REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
         if (UNTAG_Bool(REGB2)) {
         } else {
-          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
+          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 281);
         }
         REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
         REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
@@ -5291,32 +5421,32 @@ void standard___collection___array___ArrayMapValues___remove(val_t p0, val_t p1)
         } else {
           nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
         }
-        /* ../lib/standard/kernel.nit:232 */
+        /* ../lib/standard/kernel.nit:242 */
         REGB2 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB2));
       } else {
-        /* ../lib/standard/collection/array.nit:280 */
-        REGB3 = TAG_Bool(false);
+        /* ../lib/standard/collection/array.nit:281 */
+        REGB3 = TAG_Bool(0);
         REGB2 = REGB3;
       }
       if (UNTAG_Bool(REGB2)) {
       } else {
-        nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
+        nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
       }
-      /* ../lib/standard/collection/array.nit:281 */
+      /* ../lib/standard/collection/array.nit:282 */
       fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[2]);
       REGB2 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
+        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
       }
-      /* ../lib/standard/collection/array.nit:718 */
+      /* ../lib/standard/collection/array.nit:725 */
       fra.me.REG[2] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB0)];
-      /* ../lib/standard/collection/array.nit:281 */
+      /* ../lib/standard/collection/array.nit:282 */
       goto label1;
       label1: while(0);
-      /* ../lib/standard/collection/array.nit:663 */
+      /* ../lib/standard/collection/array.nit:670 */
       REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB0)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 663);
+        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 670);
       }
       fra.me.REG[2] = CALL_standard___collection___abstract_collection___Couple___second(fra.me.REG[2])(fra.me.REG[2]);
       REGB0 = TAG_Bool(IS_EQUAL_NN(fra.me.REG[2],fra.me.REG[1]));
@@ -5324,7 +5454,7 @@ void standard___collection___array___ArrayMapValues___remove(val_t p0, val_t p1)
       } else {
         REGB2 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
         if (UNTAG_Bool(REGB2)) {
-          REGB2 = TAG_Bool(false);
+          REGB2 = TAG_Bool(0);
           REGB0 = REGB2;
         } else {
           REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
@@ -5332,19 +5462,19 @@ void standard___collection___array___ArrayMapValues___remove(val_t p0, val_t p1)
         }
       }
       if (UNTAG_Bool(REGB0)) {
-        /* ../lib/standard/collection/array.nit:664 */
+        /* ../lib/standard/collection/array.nit:671 */
         CALL_standard___collection___array___ArrayMap___remove_at_index(fra.me.REG[0])(fra.me.REG[0], REGB1);
-        /* ../lib/standard/collection/array.nit:665 */
+        /* ../lib/standard/collection/array.nit:672 */
         goto label2;
       }
-      /* ../lib/standard/collection/array.nit:667 */
+      /* ../lib/standard/collection/array.nit:674 */
       REGB0 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:237 */
+      /* ../lib/standard/kernel.nit:247 */
       REGB0 = TAG_Int(UNTAG_Int(REGB1)-UNTAG_Int(REGB0));
-      /* ../lib/standard/collection/array.nit:667 */
+      /* ../lib/standard/collection/array.nit:674 */
       REGB1 = REGB0;
     } else {
-      /* ../lib/standard/collection/array.nit:662 */
+      /* ../lib/standard/collection/array.nit:669 */
       goto label3;
     }
   }
@@ -5353,6 +5483,7 @@ void standard___collection___array___ArrayMapValues___remove(val_t p0, val_t p1)
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArrayMapValues___remove_all[] = "array::ArrayMapValues::(abstract_collection::RemovableCollection::remove_all)";
 void standard___collection___array___ArrayMapValues___remove_all(val_t p0, val_t p1){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
@@ -5362,7 +5493,7 @@ void standard___collection___array___ArrayMapValues___remove_all(val_t p0, val_t
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 671;
+  fra.me.line = 678;
   fra.me.meth = LOCATE_standard___collection___array___ArrayMapValues___remove_all;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
@@ -5372,13 +5503,13 @@ void standard___collection___array___ArrayMapValues___remove_all(val_t p0, val_t
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
-  /* ../lib/standard/collection/array.nit:673 */
+  /* ../lib/standard/collection/array.nit:680 */
   fra.me.REG[0] = CALL_standard___collection___array___ArrayMapValues___map(fra.me.REG[0])(fra.me.REG[0]);
-  /* ../lib/standard/collection/array.nit:674 */
+  /* ../lib/standard/collection/array.nit:681 */
   REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
   if (UNTAG_Bool(REGB0)) {
   } else {
-    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 674);
+    nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 681);
   }
   fra.me.REG[2] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
   /* ../lib/standard/collection/array.nit:24 */
@@ -5388,11 +5519,11 @@ void standard___collection___array___ArrayMapValues___remove_all(val_t p0, val_t
     nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 24);
   }
   REGB0 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
-  /* ../lib/standard/collection/array.nit:674 */
+  /* ../lib/standard/collection/array.nit:681 */
   REGB1 = TAG_Int(1);
-  /* ../lib/standard/kernel.nit:237 */
+  /* ../lib/standard/kernel.nit:247 */
   REGB1 = TAG_Int(UNTAG_Int(REGB0)-UNTAG_Int(REGB1));
-  /* ../lib/standard/collection/array.nit:675 */
+  /* ../lib/standard/collection/array.nit:682 */
   while(1) {
     REGB0 = TAG_Int(0);
     REGB2 = TAG_Bool(VAL_ISA(REGB0, VTCOLOR_standard___kernel___Comparable___OTHER(REGB1), VTID_standard___kernel___Comparable___OTHER(REGB1))) /*cast OTHER*/;
@@ -5400,34 +5531,34 @@ void standard___collection___array___ArrayMapValues___remove_all(val_t p0, val_t
     } else {
       nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
     }
-    /* ../lib/standard/kernel.nit:233 */
+    /* ../lib/standard/kernel.nit:243 */
     REGB0 = TAG_Bool(UNTAG_Int(REGB1)>=UNTAG_Int(REGB0));
-    /* ../lib/standard/collection/array.nit:675 */
+    /* ../lib/standard/collection/array.nit:682 */
     if (UNTAG_Bool(REGB0)) {
-      /* ../lib/standard/collection/array.nit:676 */
+      /* ../lib/standard/collection/array.nit:683 */
       REGB0 = TAG_Bool(ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0])!=NIT_NULL);
       if (UNTAG_Bool(REGB0)) {
       } else {
-        nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 676);
+        nit_abort("Uninitialized attribute %s", "_items", LOCATE_standard___collection___array, 683);
       }
       fra.me.REG[2] = ATTR_standard___collection___array___ArrayMap____items(fra.me.REG[0]);
-      /* ../lib/standard/collection/array.nit:278 */
+      /* ../lib/standard/collection/array.nit:279 */
       REGB0 = REGB1;
-      /* ../lib/standard/collection/array.nit:280 */
+      /* ../lib/standard/collection/array.nit:281 */
       REGB2 = TAG_Int(0);
       REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
       if (UNTAG_Bool(REGB3)) {
       } else {
         nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
       }
-      /* ../lib/standard/kernel.nit:233 */
+      /* ../lib/standard/kernel.nit:243 */
       REGB2 = TAG_Bool(UNTAG_Int(REGB0)>=UNTAG_Int(REGB2));
-      /* ../lib/standard/collection/array.nit:280 */
+      /* ../lib/standard/collection/array.nit:281 */
       if (UNTAG_Bool(REGB2)) {
         REGB2 = TAG_Bool(ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2])!=NIT_NULL);
         if (UNTAG_Bool(REGB2)) {
         } else {
-          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 280);
+          nit_abort("Uninitialized attribute %s", "_length", LOCATE_standard___collection___array, 281);
         }
         REGB2 = ATTR_standard___collection___array___AbstractArrayRead____length(fra.me.REG[2]);
         REGB3 = TAG_Bool(VAL_ISA(REGB2, VTCOLOR_standard___kernel___Comparable___OTHER(REGB0), VTID_standard___kernel___Comparable___OTHER(REGB0))) /*cast OTHER*/;
@@ -5435,32 +5566,32 @@ void standard___collection___array___ArrayMapValues___remove_all(val_t p0, val_t
         } else {
           nit_abort("Cast failed", NULL, LOCATE_standard___kernel, 0);
         }
-        /* ../lib/standard/kernel.nit:232 */
+        /* ../lib/standard/kernel.nit:242 */
         REGB2 = TAG_Bool(UNTAG_Int(REGB0)<UNTAG_Int(REGB2));
       } else {
-        /* ../lib/standard/collection/array.nit:280 */
-        REGB3 = TAG_Bool(false);
+        /* ../lib/standard/collection/array.nit:281 */
+        REGB3 = TAG_Bool(0);
         REGB2 = REGB3;
       }
       if (UNTAG_Bool(REGB2)) {
       } else {
-        nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 280);
+        nit_abort("Assert '%s' failed", "index", LOCATE_standard___collection___array, 281);
       }
-      /* ../lib/standard/collection/array.nit:281 */
+      /* ../lib/standard/collection/array.nit:282 */
       fra.me.REG[2] = ATTR_standard___collection___array___Array____items(fra.me.REG[2]);
       REGB2 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB2)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 281);
+        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 282);
       }
-      /* ../lib/standard/collection/array.nit:718 */
+      /* ../lib/standard/collection/array.nit:725 */
       fra.me.REG[2] = ((Nit_NativeArray)fra.me.REG[2])->val[UNTAG_Int(REGB0)];
-      /* ../lib/standard/collection/array.nit:281 */
+      /* ../lib/standard/collection/array.nit:282 */
       goto label1;
       label1: while(0);
-      /* ../lib/standard/collection/array.nit:676 */
+      /* ../lib/standard/collection/array.nit:683 */
       REGB0 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
       if (UNTAG_Bool(REGB0)) {
-        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 676);
+        nit_abort("Reciever is null", NULL, LOCATE_standard___collection___array, 683);
       }
       fra.me.REG[2] = CALL_standard___collection___abstract_collection___Couple___second(fra.me.REG[2])(fra.me.REG[2]);
       REGB0 = TAG_Bool(IS_EQUAL_NN(fra.me.REG[2],fra.me.REG[1]));
@@ -5468,7 +5599,7 @@ void standard___collection___array___ArrayMapValues___remove_all(val_t p0, val_t
       } else {
         REGB2 = TAG_Bool(fra.me.REG[2]==NIT_NULL);
         if (UNTAG_Bool(REGB2)) {
-          REGB2 = TAG_Bool(false);
+          REGB2 = TAG_Bool(0);
           REGB0 = REGB2;
         } else {
           REGB2 = CALL_standard___kernel___Object_____eqeq(fra.me.REG[2])(fra.me.REG[2], fra.me.REG[1]);
@@ -5476,17 +5607,17 @@ void standard___collection___array___ArrayMapValues___remove_all(val_t p0, val_t
         }
       }
       if (UNTAG_Bool(REGB0)) {
-        /* ../lib/standard/collection/array.nit:677 */
+        /* ../lib/standard/collection/array.nit:684 */
         CALL_standard___collection___array___ArrayMap___remove_at_index(fra.me.REG[0])(fra.me.REG[0], REGB1);
       }
-      /* ../lib/standard/collection/array.nit:679 */
+      /* ../lib/standard/collection/array.nit:686 */
       REGB0 = TAG_Int(1);
-      /* ../lib/standard/kernel.nit:237 */
+      /* ../lib/standard/kernel.nit:247 */
       REGB0 = TAG_Int(UNTAG_Int(REGB1)-UNTAG_Int(REGB0));
-      /* ../lib/standard/collection/array.nit:679 */
+      /* ../lib/standard/collection/array.nit:686 */
       REGB1 = REGB0;
     } else {
-      /* ../lib/standard/collection/array.nit:675 */
+      /* ../lib/standard/collection/array.nit:682 */
       goto label2;
     }
   }
@@ -5494,11 +5625,12 @@ void standard___collection___array___ArrayMapValues___remove_all(val_t p0, val_t
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___ArrayMapValues___init[] = "array::ArrayMapValues::init";
 void standard___collection___array___ArrayMapValues___init(val_t p0, val_t p1, int* init_table){
-  int itpos12 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___ArrayMapValues].i;
+  int itpos13 = VAL2OBJ(p0)->vft[INIT_TABLE_POS_standard___collection___array___ArrayMapValues].i;
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t tmp;
-  if (init_table[itpos12]) return;
+  if (init_table[itpos13]) return;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
   fra.me.line = 0;
@@ -5512,16 +5644,17 @@ void standard___collection___array___ArrayMapValues___init(val_t p0, val_t p1, i
   fra.me.REG[1] = p1;
   ATTR_standard___collection___array___ArrayMapValues_____atmap(fra.me.REG[0]) = fra.me.REG[1];
   stack_frame_head = fra.me.prev;
-  init_table[itpos12] = 1;
+  init_table[itpos13] = 1;
   return;
 }
+static const char LOCATE_standard___collection___array___Iterator___to_a[] = "array::Iterator::to_a";
 val_t standard___collection___array___Iterator___to_a(val_t p0){
   struct {struct stack_frame_t me; val_t MORE_REG[2];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 688;
+  fra.me.line = 695;
   fra.me.meth = LOCATE_standard___collection___array___Iterator___to_a;
   fra.me.has_broke = 0;
   fra.me.REG_size = 3;
@@ -5530,42 +5663,43 @@ val_t standard___collection___array___Iterator___to_a(val_t p0){
   fra.me.REG[1] = NIT_NULL;
   fra.me.REG[2] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:691 */
+  /* ../lib/standard/collection/array.nit:698 */
   fra.me.REG[1] = NEW_Array_standard___collection___array___Array___init();
-  /* ../lib/standard/collection/array.nit:692 */
+  /* ../lib/standard/collection/array.nit:699 */
   while(1) {
     REGB0 = CALL_standard___collection___abstract_collection___Iterator___is_ok(fra.me.REG[0])(fra.me.REG[0]);
     if (UNTAG_Bool(REGB0)) {
-      /* ../lib/standard/collection/array.nit:693 */
+      /* ../lib/standard/collection/array.nit:700 */
       fra.me.REG[2] = CALL_standard___collection___abstract_collection___Iterator___item(fra.me.REG[0])(fra.me.REG[0]);
       CALL_standard___collection___abstract_collection___SimpleCollection___add(fra.me.REG[1])(fra.me.REG[1], fra.me.REG[2]);
-      /* ../lib/standard/collection/array.nit:694 */
+      /* ../lib/standard/collection/array.nit:701 */
       CALL_standard___collection___abstract_collection___Iterator___next(fra.me.REG[0])(fra.me.REG[0]);
     } else {
-      /* ../lib/standard/collection/array.nit:692 */
+      /* ../lib/standard/collection/array.nit:699 */
       goto label1;
     }
   }
   label1: while(0);
-  /* ../lib/standard/collection/array.nit:696 */
+  /* ../lib/standard/collection/array.nit:703 */
   goto label2;
   label2: while(0);
   stack_frame_head = fra.me.prev;
   return fra.me.REG[1];
 }
+static const char LOCATE_standard___collection___array___Collection___to_a[] = "array::Collection::to_a";
 val_t standard___collection___array___Collection___to_a(val_t p0){
   struct {struct stack_frame_t me;} fra;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 701;
+  fra.me.line = 708;
   fra.me.meth = LOCATE_standard___collection___array___Collection___to_a;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
   fra.me.nitni_local_ref_head = NULL;
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
-  /* ../lib/standard/collection/array.nit:704 */
+  /* ../lib/standard/collection/array.nit:711 */
   fra.me.REG[0] = CALL_standard___collection___abstract_collection___Collection___iterator(fra.me.REG[0])(fra.me.REG[0]);
   fra.me.REG[0] = CALL_standard___collection___array___Iterator___to_a(fra.me.REG[0])(fra.me.REG[0]);
   goto label1;
@@ -5573,13 +5707,14 @@ val_t standard___collection___array___Collection___to_a(val_t p0){
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___array___ArrayCapable___calloc_array[] = "array::ArrayCapable::calloc_array";
 val_t standard___collection___array___ArrayCapable___calloc_array(val_t p0, val_t p1){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 712;
+  fra.me.line = 719;
   fra.me.meth = LOCATE_standard___collection___array___ArrayCapable___calloc_array;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
@@ -5587,18 +5722,19 @@ val_t standard___collection___array___ArrayCapable___calloc_array(val_t p0, val_
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
   REGB0 = p1;
-  /* ../lib/standard/collection/array.nit:712 */
+  /* ../lib/standard/collection/array.nit:719 */
   fra.me.REG[0] = NEW_NativeArray(UNTAG_Int(REGB0), sizeof(val_t));
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___array___NativeArray_____bra[] = "array::NativeArray::[]";
 val_t standard___collection___array___NativeArray_____bra(val_t p0, val_t p1){
   struct {struct stack_frame_t me;} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 718;
+  fra.me.line = 725;
   fra.me.meth = LOCATE_standard___collection___array___NativeArray_____bra;
   fra.me.has_broke = 0;
   fra.me.REG_size = 1;
@@ -5606,18 +5742,19 @@ val_t standard___collection___array___NativeArray_____bra(val_t p0, val_t p1){
   fra.me.REG[0] = NIT_NULL;
   fra.me.REG[0] = p0;
   REGB0 = p1;
-  /* ../lib/standard/collection/array.nit:718 */
+  /* ../lib/standard/collection/array.nit:725 */
   fra.me.REG[0] = ((Nit_NativeArray)fra.me.REG[0])->val[UNTAG_Int(REGB0)];
   stack_frame_head = fra.me.prev;
   return fra.me.REG[0];
 }
+static const char LOCATE_standard___collection___array___NativeArray_____braeq[] = "array::NativeArray::[]=";
 void standard___collection___array___NativeArray_____braeq(val_t p0, val_t p1, val_t p2){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 719;
+  fra.me.line = 726;
   fra.me.meth = LOCATE_standard___collection___array___NativeArray_____braeq;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -5627,18 +5764,19 @@ void standard___collection___array___NativeArray_____braeq(val_t p0, val_t p1, v
   fra.me.REG[0] = p0;
   REGB0 = p1;
   fra.me.REG[1] = p2;
-  /* ../lib/standard/collection/array.nit:719 */
+  /* ../lib/standard/collection/array.nit:726 */
   ((Nit_NativeArray)fra.me.REG[0])->val[UNTAG_Int(REGB0)]=fra.me.REG[1];
   stack_frame_head = fra.me.prev;
   return;
 }
+static const char LOCATE_standard___collection___array___NativeArray___copy_to[] = "array::NativeArray::copy_to";
 void standard___collection___array___NativeArray___copy_to(val_t p0, val_t p1, val_t p2){
   struct {struct stack_frame_t me; val_t MORE_REG[1];} fra;
   val_t REGB0;
   val_t tmp;
   fra.me.prev = stack_frame_head; stack_frame_head = &fra.me;
   fra.me.file = LOCATE_standard___collection___array;
-  fra.me.line = 720;
+  fra.me.line = 727;
   fra.me.meth = LOCATE_standard___collection___array___NativeArray___copy_to;
   fra.me.has_broke = 0;
   fra.me.REG_size = 2;
@@ -5648,7 +5786,7 @@ void standard___collection___array___NativeArray___copy_to(val_t p0, val_t p1, v
   fra.me.REG[0] = p0;
   fra.me.REG[1] = p1;
   REGB0 = p2;
-  /* ../lib/standard/collection/array.nit:720 */
+  /* ../lib/standard/collection/array.nit:727 */
   (void)memcpy(((Nit_NativeArray )fra.me.REG[1])->val, ((Nit_NativeArray)fra.me.REG[0])->val, UNTAG_Int(REGB0)*sizeof(val_t));
   stack_frame_head = fra.me.prev;
   return;