Make 'where' lazy.

runtime/lib/array.dart

Index: runtime/lib/array.dart
diff --git a/runtime/lib/array.dart b/runtime/lib/array.dart
index 01480f67f868c2d1094b7ff17a169ef6d7cdf53f..aa25cece54aff956720e82fcc08a6ac74a5c64fe 100644
--- a/runtime/lib/array.dart
+++ b/runtime/lib/array.dart
@@ -73,9 +73,7 @@ class _ObjectArray<E> implements List<E> {
     return Collections.reduce(this, initialValue, combine);
   }
 
-  Collection<E> where(bool f(E element)) {
-    return Collections.where(this, new _GrowableObjectArray<E>(), f);
-  }
+  Iterable<E> where(bool f(E element)) => new WhereIterable<E>(this, f);

[Ivan Posva, 2012/11/26 18:30:40]

ditto: curlys

[floitsch, 2012/11/28 13:49:38]

Done.

 
   bool every(bool f(E element)) {
     return Collections.every(this, f);
@@ -218,9 +216,7 @@ class _ImmutableArray<E> implements List<E> {
     return Collections.reduce(this, initialValue, combine);
   }
 
-  Collection<E> where(bool f(E element)) {
-    return Collections.where(this, new _GrowableObjectArray<E>(), f);
-  }
+  Iterable<E> where(bool f(E element)) => new WhereIterable<E>(this, f);

[Ivan Posva, 2012/11/26 18:30:40]

ditto

[floitsch, 2012/11/28 13:49:38]

Done.

 
   bool every(bool f(E element)) {
     return Collections.every(this, f);