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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 /** | 5 /** |
6 * The common interface of all collections. | 6 * The common interface of all collections. |
7 * | 7 * |
8 * The [Collection] class contains a skeleton implementation of | 8 * The [Collection] class contains a skeleton implementation of |
9 * an iterator based collection. | 9 * an iterator based collection. |
10 */ | 10 */ |
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88 bool some(bool f(E element)) { | 88 bool some(bool f(E element)) { |
89 for (E element in this) { | 89 for (E element in this) { |
90 if (f(element)) return true; | 90 if (f(element)) return true; |
91 } | 91 } |
92 return false; | 92 return false; |
93 } | 93 } |
94 | 94 |
95 /** | 95 /** |
96 * Returns true if there is no element in this collection. | 96 * Returns true if there is no element in this collection. |
97 */ | 97 */ |
98 bool isEmpty() => !iterator().hasNext(); | 98 bool isEmpty() => !iterator().hasNext; |
99 } | 99 } |
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