| // Copyright (c) 2013, 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; |
| |
| /** |
| * An unmodifiable [List] view of another List. |
| * |
| * The source of the elements may be a [List] or any [Iterable] with |
| * efficient [Iterable.length] and [Iterable.elementAt]. |
| */ |
| class UnmodifiableListView<E> extends UnmodifiableListBase<E> { |
| final Iterable<E> _source; |
| /** Create an unmodifiable list backed by [source]. */ |
| UnmodifiableListView(Iterable<E> source) : _source = source; |
| int get length => _source.length; |
| E operator[](int index) => _source.elementAt(index); |
| } |
