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47 lines
2.0 KiB
JavaScript
47 lines
2.0 KiB
JavaScript
/**
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* lodash 3.0.0 (Custom Build) <https://lodash.com/>
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* Build: `lodash modern modularize exports="npm" -o ./`
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* Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
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* Based on Underscore.js 1.7.0 <http://underscorejs.org/LICENSE>
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* Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
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* Available under MIT license <https://lodash.com/license>
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*/
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var arrayEach = require('lodash._arrayeach'),
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baseEach = require('lodash._baseeach'),
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bindCallback = require('lodash._bindcallback'),
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isArray = require('lodash.isarray');
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/**
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* Iterates over elements of `collection` invoking `iteratee` for each element.
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* The `iteratee` is bound to `thisArg` and invoked with three arguments;
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* (value, index|key, collection). Iterator functions may exit iteration early
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* by explicitly returning `false`.
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*
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* **Note:** As with other "Collections" methods, objects with a `length` property
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* are iterated like arrays. To avoid this behavior `_.forIn` or `_.forOwn`
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* may be used for object iteration.
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*
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* @static
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* @memberOf _
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* @alias each
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* @category Collection
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* @param {Array|Object|string} collection The collection to iterate over.
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* @param {Function} [iteratee=_.identity] The function invoked per iteration.
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* @param {*} [thisArg] The `this` binding of `iteratee`.
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* @returns {Array|Object|string} Returns `collection`.
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* @example
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*
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* _([1, 2, 3]).forEach(function(n) { console.log(n); }).value();
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* // => logs each value from left to right and returns the array
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*
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* _.forEach({ 'one': 1, 'two': 2, 'three': 3 }, function(n, key) { console.log(n, key); });
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* // => logs each value-key pair and returns the object (iteration order is not guaranteed)
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*/
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function forEach(collection, iteratee, thisArg) {
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return (typeof iteratee == 'function' && typeof thisArg == 'undefined' && isArray(collection))
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? arrayEach(collection, iteratee)
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: baseEach(collection, bindCallback(iteratee, thisArg, 3));
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}
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module.exports = forEach;
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