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39 lines
1.3 KiB
JavaScript
39 lines
1.3 KiB
JavaScript
/**
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* lodash 4.2.0 (Custom Build) <https://lodash.com/>
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* Build: `lodash modularize exports="npm" -o ./`
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* Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
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* Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
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* Copyright 2009-2016 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 baseIteratee = require('lodash._baseiteratee'),
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baseUniq = require('lodash._baseuniq');
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/**
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* This method is like `_.uniq` except that it accepts `iteratee` which is
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* invoked for each element in `array` to generate the criterion by which
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* uniqueness is computed. The iteratee is invoked with one argument: (value).
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*
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* @static
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* @memberOf _
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* @category Array
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* @param {Array} array The array to inspect.
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* @param {Function|Object|string} [iteratee=_.identity] The iteratee invoked per element.
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* @returns {Array} Returns the new duplicate free array.
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* @example
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*
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* _.uniqBy([2.1, 1.2, 2.3], Math.floor);
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* // => [2.1, 1.2]
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*
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* // The `_.property` iteratee shorthand.
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* _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
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* // => [{ 'x': 1 }, { 'x': 2 }]
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*/
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function uniqBy(array, iteratee) {
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return (array && array.length)
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? baseUniq(array, baseIteratee(iteratee))
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: [];
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}
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module.exports = uniqBy;
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