Add List.asMap().

sdk/lib/core/list.dart

 // Copyright (c) 2012, 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.core;
 
 /**
  * A [List] is an indexable collection with a length.
  *
  * A `List` implementation can be choose not to support all methods
@@ skipping 236 matching lines @@
    * Throws an [UnsupportedError] if the list is
    * not extendable.
    * If [length] is 0, this method does not do anything.
    * If [start] is the length of the list, this method inserts the
    * range at the end of the list.
    * Throws an [ArgumentError] if [length] is negative.
    * Throws an [RangeError] if [start] is negative or if
    * [start] is greater than the length of the list.
    */
   void insertRange(int start, int length, [E fill]);
+
+  /**
+   * Returns a [Map] view of `this`.

[Lasse Reichstein Nielsen, 2013/03/04 08:28:37]

Unmodifiable?

[floitsch, 2013/03/04 16:50:20]

Done.

+   *
+   * The returned map has the integers `0` to `length - 1` as keys and this
+   * list as values.

[Lasse Reichstein Nielsen, 2013/03/04 08:28:37]

It has the indices of this list as keys, and the corresponding elements as
values.

[floitsch, 2013/03/04 16:50:20]

Done.

+   */
+  Map<int, E> asMap();
 }