pkg/intl/lib/number_format.dart - Issue 26681002: Add EfficientLength marker interface to some iterabels.

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Side by Side Diff: pkg/intl/lib/number_format.dart

Issue 26681002: Add EfficientLength marker interface to some iterabels. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart

Patch Set: Also document Map.length is efficient, while we are at it. Created 7 years, 2 months ago

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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 intl;	5 part of intl;

6 /**	6 /**

7 * Provides the ability to format a number in a locale-specific way. The	7 * Provides the ability to format a number in a locale-specific way. The

8 * format is specified as a pattern using a subset of the ICU formatting	8 * format is specified as a pattern using a subset of the ICU formatting

9 * patterns.	9 * patterns.

10 *	10 *

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713 class _StringIterator implements Iterator<String> {	713 class _StringIterator implements Iterator<String> {

714 String input;	714 String input;

715 var index = -1;	715 var index = -1;

716 inBounds(i) => i >= 0 && i < input.length;	716 inBounds(i) => i >= 0 && i < input.length;

717 _StringIterator(this.input);	717 _StringIterator(this.input);

718 String get current => inBounds(index) ? input[index] : null;	718 String get current => inBounds(index) ? input[index] : null;

719	719

720 bool moveNext() => inBounds(++index);	720 bool moveNext() => inBounds(++index);

721 String get peek => inBounds(index + 1) ? input[index + 1] : null;	721 String get peek => inBounds(index + 1) ? input[index + 1] : null;

722 Iterator<String> get iterator => this;	722 Iterator<String> get iterator => this;

723 }	723 }

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