mirror of
https://github.com/whoisclebs/lodash.git
synced 2026-02-01 15:57:48 +00:00
63 lines
2.3 KiB
JavaScript
63 lines
2.3 KiB
JavaScript
/**
|
|
* lodash 3.0.3 (Custom Build) <https://lodash.com/>
|
|
* Build: `lodash modern modularize exports="npm" -o ./`
|
|
* Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
|
|
* Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
|
|
* Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
|
|
* Available under MIT license <https://lodash.com/license>
|
|
*/
|
|
var arrayEach = require('lodash._arrayeach'),
|
|
baseEach = require('lodash._baseeach'),
|
|
bindCallback = require('lodash._bindcallback'),
|
|
isArray = require('lodash.isarray');
|
|
|
|
/**
|
|
* Creates a function for `_.forEach` or `_.forEachRight`.
|
|
*
|
|
* @private
|
|
* @param {Function} arrayFunc The function to iterate over an array.
|
|
* @param {Function} eachFunc The function to iterate over a collection.
|
|
* @returns {Function} Returns the new each function.
|
|
*/
|
|
function createForEach(arrayFunc, eachFunc) {
|
|
return function(collection, iteratee, thisArg) {
|
|
return (typeof iteratee == 'function' && thisArg === undefined && isArray(collection))
|
|
? arrayFunc(collection, iteratee)
|
|
: eachFunc(collection, bindCallback(iteratee, thisArg, 3));
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Iterates over elements of `collection` invoking `iteratee` for each element.
|
|
* The `iteratee` is bound to `thisArg` and invoked with three arguments:
|
|
* (value, index|key, collection). Iteratee functions may exit iteration early
|
|
* by explicitly returning `false`.
|
|
*
|
|
* **Note:** As with other "Collections" methods, objects with a "length" property
|
|
* are iterated like arrays. To avoid this behavior `_.forIn` or `_.forOwn`
|
|
* may be used for object iteration.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @alias each
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {Array|Object|string} Returns `collection`.
|
|
* @example
|
|
*
|
|
* _([1, 2]).forEach(function(n) {
|
|
* console.log(n);
|
|
* }).value();
|
|
* // => logs each value from left to right and returns the array
|
|
*
|
|
* _.forEach({ 'a': 1, 'b': 2 }, function(n, key) {
|
|
* console.log(n, key);
|
|
* });
|
|
* // => logs each value-key pair and returns the object (iteration order is not guaranteed)
|
|
*/
|
|
var forEach = createForEach(arrayEach, baseEach);
|
|
|
|
module.exports = forEach;
|