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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 * Representation of Dart integers containing integer specific | 8 * An arbitrarily large integer. |
| 9 * operations and specialization of operations inherited from [num]. | |
| 10 * | 9 * |
| 11 * Integers can be arbitrarily large in Dart. | 10 * **Note:** When compiling to JavaScript, integers are |
| 12 * | |
| 13 * *Note however, that when compiling to JavaScript, integers are | |
| 14 * implemented as JavaScript numbers. When compiling to JavaScript, | 11 * implemented as JavaScript numbers. When compiling to JavaScript, |
| 15 * integers are therefore restricted to 53 significant bits because | 12 * integers are therefore restricted to 53 significant bits because |
| 16 * all JavaScript numbers are double-precision floating point | 13 * all JavaScript numbers are double-precision floating point |
| 17 * values. The behavior of the operators and methods in the [int] | 14 * values. The behavior of the operators and methods in the [int] |
| 18 * class therefore sometimes differs between the Dart VM and Dart code | 15 * class therefore sometimes differs between the Dart VM and Dart code |
| 19 * compiled to JavaScript.* | 16 * compiled to JavaScript. |
| 20 * | 17 * |
| 21 * It is a compile-time error for a class to attempt to extend or implement int. | 18 * It is a compile-time error for a class to attempt to extend or implement int. |
| 22 */ | 19 */ |
| 23 abstract class int extends num { | 20 abstract class int extends num { |
| 24 /** | 21 /** |
| 25 * Bit-wise and operator. | 22 * Bit-wise and operator. |
| 26 * | 23 * |
| 27 * Treating both `this` and [other] as sufficiently large two's component | 24 * Treating both `this` and [other] as sufficiently large two's component |
| 28 * integers, the result is a number with only the bits set that are set in | 25 * integers, the result is a number with only the bits set that are set in |
| 29 * both `this` and [other] | 26 * both `this` and [other] |
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| 249 * value is used instead. If no [onError] is provided, a [FormatException] | 246 * value is used instead. If no [onError] is provided, a [FormatException] |
| 250 * is thrown. | 247 * is thrown. |
| 251 * | 248 * |
| 252 * The [onError] function is only invoked if [source] is a [String]. It is | 249 * The [onError] function is only invoked if [source] is a [String]. It is |
| 253 * not invoked if the [source] is, for example, `null`. | 250 * not invoked if the [source] is, for example, `null`. |
| 254 */ | 251 */ |
| 255 external static int parse(String source, | 252 external static int parse(String source, |
| 256 { int radix, | 253 { int radix, |
| 257 int onError(String source) }); | 254 int onError(String source) }); |
| 258 } | 255 } |
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