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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 * This class is the public interface of a set. A set is a collection | 6 * This class is the public interface of a set. A set is a collection |
7 * without duplicates. | 7 * without duplicates. |
8 */ | 8 */ |
9 abstract class Set<E> extends Collection<E> { | 9 abstract class Set<E> extends Collection<E> { |
10 factory Set() => new HashSetImplementation<E>(); | 10 factory Set() => new HashSetImplementation<E>(); |
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62 */ | 62 */ |
63 Set<E> intersection(Collection<E> other); | 63 Set<E> intersection(Collection<E> other); |
64 | 64 |
65 /** | 65 /** |
66 * Removes all elements in the set. | 66 * Removes all elements in the set. |
67 */ | 67 */ |
68 void clear(); | 68 void clear(); |
69 | 69 |
70 } | 70 } |
71 | 71 |
72 abstract class HashSet<E extends Hashable> extends Set<E> { | 72 abstract class HashSet<E> extends Set<E> { |
73 factory HashSet() => new HashSetImplementation<E>(); | 73 factory HashSet() => new HashSetImplementation<E>(); |
74 | 74 |
75 /** | 75 /** |
76 * Creates a [Set] that contains all elements of [other]. | 76 * Creates a [Set] that contains all elements of [other]. |
77 */ | 77 */ |
78 factory HashSet.from(Iterable<E> other) => | 78 factory HashSet.from(Iterable<E> other) => |
79 new HashSetImplementation<E>.from(other); | 79 new HashSetImplementation<E>.from(other); |
80 } | 80 } |
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