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| author | ruki <waruqi@gmail.com> | 2018-11-08 00:38:48 +0800 |
|---|---|---|
| committer | ruki <waruqi@gmail.com> | 2018-11-07 21:53:09 +0800 |
| commit | 26105034da4fcce7ac883c899d781f016559310d (patch) | |
| tree | c459a5dc4e3aa0972d9919033ece511ce76dd129 /node_modules/lodash/toNumber.js | |
| parent | 2c77f00f1a7ecb6c8192f9c16d3b2001b254a107 (diff) | |
| download | xmake-docs-26105034da4fcce7ac883c899d781f016559310d.tar.gz xmake-docs-26105034da4fcce7ac883c899d781f016559310d.zip | |
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Diffstat (limited to 'node_modules/lodash/toNumber.js')
| -rw-r--r-- | node_modules/lodash/toNumber.js | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/node_modules/lodash/toNumber.js b/node_modules/lodash/toNumber.js new file mode 100644 index 00000000..b0f72de3 --- /dev/null +++ b/node_modules/lodash/toNumber.js @@ -0,0 +1,66 @@ +var isObject = require('./isObject'), + isSymbol = require('./isSymbol'); + +/** Used as references for various `Number` constants. */ +var NAN = 0 / 0; + +/** Used to match leading and trailing whitespace. */ +var reTrim = /^\s+|\s+$/g; + +/** Used to detect bad signed hexadecimal string values. */ +var reIsBadHex = /^[-+]0x[0-9a-f]+$/i; + +/** Used to detect binary string values. */ +var reIsBinary = /^0b[01]+$/i; + +/** Used to detect octal string values. */ +var reIsOctal = /^0o[0-7]+$/i; + +/** Built-in method references without a dependency on `root`. */ +var freeParseInt = parseInt; + +/** + * Converts `value` to a number. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to process. + * @returns {number} Returns the number. + * @example + * + * _.toNumber(3.2); + * // => 3.2 + * + * _.toNumber(Number.MIN_VALUE); + * // => 5e-324 + * + * _.toNumber(Infinity); + * // => Infinity + * + * _.toNumber('3.2'); + * // => 3.2 + */ +function toNumber(value) { + if (typeof value == 'number') { + return value; + } + if (isSymbol(value)) { + return NAN; + } + if (isObject(value)) { + var other = typeof value.valueOf == 'function' ? value.valueOf() : value; + value = isObject(other) ? (other + '') : other; + } + if (typeof value != 'string') { + return value === 0 ? value : +value; + } + value = value.replace(reTrim, ''); + var isBinary = reIsBinary.test(value); + return (isBinary || reIsOctal.test(value)) + ? freeParseInt(value.slice(2), isBinary ? 2 : 8) + : (reIsBadHex.test(value) ? NAN : +value); +} + +module.exports = toNumber; |
