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Diffstat (limited to 'node_modules/lodash/bind.js')
-rw-r--r-- | node_modules/lodash/bind.js | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/node_modules/lodash/bind.js b/node_modules/lodash/bind.js new file mode 100644 index 0000000..b1076e9 --- /dev/null +++ b/node_modules/lodash/bind.js @@ -0,0 +1,57 @@ +var baseRest = require('./_baseRest'), + createWrap = require('./_createWrap'), + getHolder = require('./_getHolder'), + replaceHolders = require('./_replaceHolders'); + +/** Used to compose bitmasks for function metadata. */ +var WRAP_BIND_FLAG = 1, + WRAP_PARTIAL_FLAG = 32; + +/** + * Creates a function that invokes `func` with the `this` binding of `thisArg` + * and `partials` prepended to the arguments it receives. + * + * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds, + * may be used as a placeholder for partially applied arguments. + * + * **Note:** Unlike native `Function#bind`, this method doesn't set the "length" + * property of bound functions. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to bind. + * @param {*} thisArg The `this` binding of `func`. + * @param {...*} [partials] The arguments to be partially applied. + * @returns {Function} Returns the new bound function. + * @example + * + * function greet(greeting, punctuation) { + * return greeting + ' ' + this.user + punctuation; + * } + * + * var object = { 'user': 'fred' }; + * + * var bound = _.bind(greet, object, 'hi'); + * bound('!'); + * // => 'hi fred!' + * + * // Bound with placeholders. + * var bound = _.bind(greet, object, _, '!'); + * bound('hi'); + * // => 'hi fred!' + */ +var bind = baseRest(function(func, thisArg, partials) { + var bitmask = WRAP_BIND_FLAG; + if (partials.length) { + var holders = replaceHolders(partials, getHolder(bind)); + bitmask |= WRAP_PARTIAL_FLAG; + } + return createWrap(func, bitmask, thisArg, partials, holders); +}); + +// Assign default placeholders. +bind.placeholder = {}; + +module.exports = bind; |