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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 part of "core.dart"; |    5 part of "dart:core"; | 
|    6  |    6  | 
|    7 /** |    7 /** | 
|    8  * An collection of key-value pairs, from which you retrieve a value |    8  * An collection of key-value pairs, from which you retrieve a value | 
|    9  * using its associated key. |    9  * using its associated key. | 
|   10  * |   10  * | 
|   11  * There is a finite number of keys in the map, |   11  * There is a finite number of keys in the map, | 
|   12  * and each key has exactly one value associated with it. |   12  * and each key has exactly one value associated with it. | 
|   13  * |   13  * | 
|   14  * Maps, and their keys and values, can be iterated. |   14  * Maps, and their keys and values, can be iterated. | 
|   15  * The order of iteration is defined by the individual type of map. |   15  * The order of iteration is defined by the individual type of map. | 
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|  267   /** |  267   /** | 
|  268    * Returns true if there is no key-value pair in the map. |  268    * Returns true if there is no key-value pair in the map. | 
|  269    */ |  269    */ | 
|  270   bool get isEmpty; |  270   bool get isEmpty; | 
|  271  |  271  | 
|  272   /** |  272   /** | 
|  273    * Returns true if there is at least one key-value pair in the map. |  273    * Returns true if there is at least one key-value pair in the map. | 
|  274    */ |  274    */ | 
|  275   bool get isNotEmpty; |  275   bool get isNotEmpty; | 
|  276 } |  276 } | 
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