| // 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. |
| |
| /** |
| * The [Iterator] class provides methods to iterate over an object. It |
| * is transparently used by the for-in construct to test for the end |
| * of the iteration, and to get the elements. |
| * |
| * If the object iterated over is changed during the iteration, the |
| * behavior is unspecified. |
| */ |
| abstract class Iterator<E> { |
| /** |
| * Gets the next element in the iteration. Throws a |
| * [StateError] if no element is left. |
| */ |
| E next(); |
| |
| /** |
| * Returns whether the [Iterator] has elements left. |
| */ |
| bool get hasNext; |
| } |
