| var root = require('./_root'), |
| toString = require('./toString'); |
| |
| /** Used to match leading and trailing whitespace. */ |
| var reTrimStart = /^\s+/; |
| |
| /* Built-in method references for those with the same name as other `lodash` methods. */ |
| var nativeParseInt = root.parseInt; |
| |
| /** |
| * Converts `string` to an integer of the specified radix. If `radix` is |
| * `undefined` or `0`, a `radix` of `10` is used unless `value` is a |
| * hexadecimal, in which case a `radix` of `16` is used. |
| * |
| * **Note:** This method aligns with the |
| * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`. |
| * |
| * @static |
| * @memberOf _ |
| * @since 1.1.0 |
| * @category String |
| * @param {string} string The string to convert. |
| * @param {number} [radix=10] The radix to interpret `value` by. |
| * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. |
| * @returns {number} Returns the converted integer. |
| * @example |
| * |
| * _.parseInt('08'); |
| * // => 8 |
| * |
| * _.map(['6', '08', '10'], _.parseInt); |
| * // => [6, 8, 10] |
| */ |
| function parseInt(string, radix, guard) { |
| if (guard || radix == null) { |
| radix = 0; |
| } else if (radix) { |
| radix = +radix; |
| } |
| return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0); |
| } |
| |
| module.exports = parseInt; |