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| 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, 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.collection; | 5 part of dart.collection; |
| 6 | 6 |
| 7 /** | 7 /** |
| 8 * Abstract implementation of a list. | 8 * Abstract implementation of a list. |
| 9 * | 9 * |
| 10 * `ListBase` can be used as a base class for implementing the `List` interface. | 10 * `ListBase` can be used as a base class for implementing the `List` interface. |
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| 168 } | 168 } |
| 169 | 169 |
| 170 String join([String separator = ""]) { | 170 String join([String separator = ""]) { |
| 171 if (length == 0) return ""; | 171 if (length == 0) return ""; |
| 172 StringBuffer buffer = new StringBuffer()..writeAll(this, separator); | 172 StringBuffer buffer = new StringBuffer()..writeAll(this, separator); |
| 173 return buffer.toString(); | 173 return buffer.toString(); |
| 174 } | 174 } |
| 175 | 175 |
| 176 Iterable<E> where(bool test(E element)) => new WhereIterable<E>(this, test); | 176 Iterable<E> where(bool test(E element)) => new WhereIterable<E>(this, test); |
| 177 | 177 |
| 178 Iterable map(f(E element)) => new MappedListIterable(this, f); | 178 Iterable/*<T>*/ map/*<T>*/(/*=T*/ f(E element)) => new MappedListIterable<E, d
ynamic/*=T*/>(this, f); |
| 179 | 179 |
| 180 Iterable expand(Iterable f(E element)) => | 180 Iterable/*<T>*/ expand/*<T>*/(Iterable/*<T>*/ f(E element)) => |
| 181 new ExpandIterable<E, dynamic>(this, f); | 181 new ExpandIterable<E, dynamic/*=T*/>(this, f); |
| 182 | 182 |
| 183 E reduce(E combine(E previousValue, E element)) { | 183 E reduce(E combine(E previousValue, E element)) { |
| 184 int length = this.length; | 184 int length = this.length; |
| 185 if (length == 0) throw IterableElementError.noElement(); | 185 if (length == 0) throw IterableElementError.noElement(); |
| 186 E value = this[0]; | 186 E value = this[0]; |
| 187 for (int i = 1; i < length; i++) { | 187 for (int i = 1; i < length; i++) { |
| 188 value = combine(value, this[i]); | 188 value = combine(value, this[i]); |
| 189 if (length != this.length) { | 189 if (length != this.length) { |
| 190 throw new ConcurrentModificationError(this); | 190 throw new ConcurrentModificationError(this); |
| 191 } | 191 } |
| 192 } | 192 } |
| 193 return value; | 193 return value; |
| 194 } | 194 } |
| 195 | 195 |
| 196 fold(var initialValue, combine(var previousValue, E element)) { | 196 /*=T*/ fold/*<T>*/(var/*=T*/ initialValue, /*=T*/combine(var/*=T*/ previousVal
ue, E element)) { |
| 197 var value = initialValue; | 197 var value = initialValue; |
| 198 int length = this.length; | 198 int length = this.length; |
| 199 for (int i = 0; i < length; i++) { | 199 for (int i = 0; i < length; i++) { |
| 200 value = combine(value, this[i]); | 200 value = combine(value, this[i]); |
| 201 if (length != this.length) { | 201 if (length != this.length) { |
| 202 throw new ConcurrentModificationError(this); | 202 throw new ConcurrentModificationError(this); |
| 203 } | 203 } |
| 204 } | 204 } |
| 205 return value; | 205 return value; |
| 206 } | 206 } |
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| 491 for (E element in iterable) { | 491 for (E element in iterable) { |
| 492 this[index++] = element; | 492 this[index++] = element; |
| 493 } | 493 } |
| 494 } | 494 } |
| 495 } | 495 } |
| 496 | 496 |
| 497 Iterable<E> get reversed => new ReversedListIterable<E>(this); | 497 Iterable<E> get reversed => new ReversedListIterable<E>(this); |
| 498 | 498 |
| 499 String toString() => IterableBase.iterableToFullString(this, '[', ']'); | 499 String toString() => IterableBase.iterableToFullString(this, '[', ']'); |
| 500 } | 500 } |
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