stdlib/strings: Fixed behaviour for substring_from, returns an empty string instead...

[nit.git] / examples / calculator.nit

diff --git a/examples/calculator.nit b/examples/calculator.nit
index 071ea20..35ed125 100644 (file)
--- a/examples/calculator.nit
+++ b/examples/calculator.nit
@@ -57,6 +57,7 @@ class CalculatorContext
 
        fun switch_to_decimals
        do
+               if self.current == null then current = 0.0
                if after_point != null then return
 
                after_point = -1
@@ -96,6 +97,7 @@ class CalculatorGui
 
        var lbl_disp : GtkLabel
        var but_eq : GtkButton
+       var but_dot : GtkButton
 
        var context = new CalculatorContext
 
@@ -111,9 +113,11 @@ class CalculatorGui
                if user_data isa Char then # is an operation
                        var c = user_data
                        if c == '.' then
+                               but_dot.sensitive= false
                                context.switch_to_decimals
                                lbl_disp.text = "{context.current.to_i}."
                        else
+                               but_dot.sensitive= true
                                context.push_op( c )
                                
                                var s = context.result.to_precision_native(6)
@@ -135,7 +139,7 @@ class CalculatorGui
                else if user_data isa Int then # is a number
                        var n = user_data
                        context.push_digit( n )
-                       lbl_disp.text = context.current.to_precision(after_point)
+                       lbl_disp.text = context.current.to_precision_native(after_point)
                end
        end
 
@@ -178,7 +182,7 @@ class CalculatorGui
                container.attach( but_eq, 4, 3, 1, 2 )
 
                # .
-               var but_dot = new GtkButton.with_label( "." )
+               but_dot = new GtkButton.with_label( "." )
                but_dot.request_size( 64, 64 )
                but_dot.signal_connect( "clicked", self, '.' )
                container.attach( but_dot, 1, 4, 1, 1 )