Added method map to Collection interface and all its implementations (except classes generated fr...

runtime/lib/array.dart

Index: runtime/lib/array.dart
===================================================================
--- runtime/lib/array.dart	(revision 2973)
+++ runtime/lib/array.dart	(working copy)
@@ -84,6 +84,10 @@
     Collections.forEach(this, f);
   }
 
+  Collection map(f(E element)) {
+    return Collections.map(this, new GrowableObjectArray(), f);

[ahe, 2012/01/05 22:36:54]

new GrowableObjectArray(length)

[Ivan Posva, 2012/01/05 22:47:03]

Maybe even allocate a new ObjectArray(length), but this is a bigger question
about what types the collection methods return.

[gbracha, 2012/01/12 00:53:57]

I suppose someone could compute the mapped collection and then want to add stuff
to it. Bad style perhaps, but I leave it to the library designer to decide.

+  }
+
   Collection<E> filter(bool f(E element)) {
     return Collections.filter(this, new GrowableObjectArray<E>(), f);
   }