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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 part of dart.core; | 5 part of dart.core; |
6 | 6 |
7 /** | 7 /** |
8 * An indexable collection of objects with a length. | 8 * An indexable collection of objects with a length. |
9 * | 9 * |
10 * Subclasses of this class implement different kinds of lists. | 10 * Subclasses of this class implement different kinds of lists. |
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44 * temporarily and is restored before continuing the iteration, the iterator | 44 * temporarily and is restored before continuing the iteration, the iterator |
45 * does not detect it. | 45 * does not detect it. |
46 * | 46 * |
47 * It is generally not allowed to modify the list's length (adding or removing | 47 * It is generally not allowed to modify the list's length (adding or removing |
48 * elements) while an operation on the list is being performed, | 48 * elements) while an operation on the list is being performed, |
49 * for example during a call to [forEach] or [sort]. | 49 * for example during a call to [forEach] or [sort]. |
50 * Changing the list's length while it is being iterated, either by iterating it | 50 * Changing the list's length while it is being iterated, either by iterating it |
51 * directly or through iterating an [Iterable] that is backed by the list, will | 51 * directly or through iterating an [Iterable] that is backed by the list, will |
52 * break the iteration. | 52 * break the iteration. |
53 */ | 53 */ |
54 abstract class List<E> implements Iterable<E>, EfficientLength { | 54 abstract class List<E> implements EfficientLengthIterable<E> { |
55 /** | 55 /** |
56 * Creates a list of the given length. | 56 * Creates a list of the given length. |
57 * | 57 * |
58 * The created list is fixed-length if [length] is provided. | 58 * The created list is fixed-length if [length] is provided. |
59 * | 59 * |
60 * List fixedLengthList = new List(3); | 60 * List fixedLengthList = new List(3); |
61 * fixedLengthList.length; // 3 | 61 * fixedLengthList.length; // 3 |
62 * fixedLengthList.length = 1; // Error | 62 * fixedLengthList.length = 1; // Error |
63 * | 63 * |
64 * The list has length 0 and is growable if [length] is omitted. | 64 * The list has length 0 and is growable if [length] is omitted. |
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498 * as values. The `Map.keys` [Iterable] iterates the indices of this list | 498 * as values. The `Map.keys` [Iterable] iterates the indices of this list |
499 * in numerical order. | 499 * in numerical order. |
500 * | 500 * |
501 * List<String> words = ['fee', 'fi', 'fo', 'fum']; | 501 * List<String> words = ['fee', 'fi', 'fo', 'fum']; |
502 * Map<int, String> map = words.asMap(); | 502 * Map<int, String> map = words.asMap(); |
503 * map[0] + map[1]; // 'feefi'; | 503 * map[0] + map[1]; // 'feefi'; |
504 * map.keys.toList(); // [0, 1, 2, 3] | 504 * map.keys.toList(); // [0, 1, 2, 3] |
505 */ | 505 */ |
506 Map<int, E> asMap(); | 506 Map<int, E> asMap(); |
507 } | 507 } |
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