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| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, 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 #library('util'); | 5 #library('util'); |
| 6 | 6 |
| 7 /** | 7 /** |
| 8 * An abstract map implementation. This class can be used as a superclass for | 8 * An abstract map implementation. This class can be used as a superclass for |
| 9 * implementing maps, requiring only the further implementation of the | 9 * implementing maps, requiring only the further implementation of the |
| 10 * [:operator []:], [:forEach:] and [:length:] methods to provide a fully | 10 * [:operator []:], [:forEach:] and [:length:] methods to provide a fully |
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| 152 | 152 |
| 153 void forEach(void f(K key, Vout value)) { | 153 void forEach(void f(K key, Vout value)) { |
| 154 _map.forEach((K k, Vin v) { | 154 _map.forEach((K k, Vin v) { |
| 155 var value = _filter(v); | 155 var value = _filter(v); |
| 156 if (value !== null) { | 156 if (value !== null) { |
| 157 f(k, value); | 157 f(k, value); |
| 158 } | 158 } |
| 159 }); | 159 }); |
| 160 } | 160 } |
| 161 } | 161 } |
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