lib/cocoa: intro `NSString::nil

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/lib/cocoa/foundation.nit b/lib/cocoa/foundation.nit
index c476df9..084162c 100644 (file)
--- a/lib/cocoa/foundation.nit
+++ b/lib/cocoa/foundation.nit
@@ -31,6 +31,9 @@ end
 extern class NSString in "ObjC" `{ NSString * `}
        super NSObject
 
+       # Null pointer
+       new nil in "ObjC" `{ return nil; `}
+
        # Get an UTF8 encoded `char*` copy of `self`
        fun utf8_string: NativeString in "ObjC" `{ return (char *)[self UTF8String]; `}