Test equality argument order in iterable.

sdk/lib/_collection_dev/iterable.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of dart._collection.dev;
 
 /**
  * An [Iterable] for classes that have efficient [length] and [elementAt].
  *
  * All other methods are implemented in terms of [length] and [elementAt],
@@ skipping 676 matching lines @@
 }
 
 /**
  * This class provides default implementations for Iterables (including Lists).
  *
  * The uses of this class will be replaced by mixins.
  */
 class IterableMixinWorkaround {
   static bool contains(Iterable iterable, var element) {
     for (final e in iterable) {
-      if (element == e) return true;
+      if (e == element) return true;

[Lasse Reichstein Nielsen, 2013/06/26 08:26:59]

Excellent!

     }
     return false;
   }
 
   static void forEach(Iterable iterable, void f(o)) {
     for (final e in iterable) {
       f(e);
     }
   }
 
@@ skipping 346 matching lines @@
 
   static Set setDifference(Set set, Set other, Set result) {
     for (var element in set) {
       if (!other.contains(element)) {
         result.add(element);
       }
     }
     return result;
   }
 }