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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 class _Lists { | 5 class _Lists { |
| 6 | 6 |
| 7 /** | 7 /** |
| 8 * Returns the index in the array [a] of the given [element], starting | 8 * Returns the index in the array [a] of the given [element], starting |
| 9 * the search at index [startIndex] to [endIndex] (exclusive). | 9 * the search at index [startIndex] to [endIndex] (exclusive). |
| 10 * Returns -1 if [element] is not found. | 10 * Returns -1 if [element] is not found. |
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| 45 } | 45 } |
| 46 } | 46 } |
| 47 return -1; | 47 return -1; |
| 48 } | 48 } |
| 49 | 49 |
| 50 /** | 50 /** |
| 51 * Returns a sub list copy of this list, from [start] to | 51 * Returns a sub list copy of this list, from [start] to |
| 52 * [:start + length:]. | 52 * [:start + length:]. |
| 53 * Returns an empty list if [length] is 0. | 53 * Returns an empty list if [length] is 0. |
| 54 * Throws an [ArgumentError] if [length] is negative. | 54 * Throws an [ArgumentError] if [length] is negative. |
| 55 * Throws an [IndexOutOfRangeException] if [start] or | 55 * Throws an [RangeError] if [start] or |
|
floitsch
2012/10/25 14:31:38
Throws a [RangeError]
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| 56 * [:start + length:] are out of range. | 56 * [:start + length:] are out of range. |
| 57 */ | 57 */ |
| 58 static List getRange(List a, int start, int length, List accumulator) { | 58 static List getRange(List a, int start, int length, List accumulator) { |
| 59 if (length < 0) throw new ArgumentError('length'); | 59 if (length < 0) throw new ArgumentError('length'); |
| 60 if (start < 0) throw new IndexOutOfRangeException(start); | 60 if (start < 0) throw new RangeError(start); |
| 61 int end = start + length; | 61 int end = start + length; |
| 62 if (end > a.length) throw new IndexOutOfRangeException(end); | 62 if (end > a.length) throw new RangeError(end); |
| 63 for (int i = start; i < end; i++) { | 63 for (int i = start; i < end; i++) { |
| 64 accumulator.add(a[i]); | 64 accumulator.add(a[i]); |
| 65 } | 65 } |
| 66 return accumulator; | 66 return accumulator; |
| 67 } | 67 } |
| 68 } | 68 } |
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