Vlad Durnea
cffdf8af86
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32 lines
1013 B
JavaScript
32 lines
1013 B
JavaScript
var baseIteratee = require('./_baseIteratee'),
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baseUniq = require('./_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 order of result values is determined by the
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* order they occur in the array. The iteratee is invoked with one argument:
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* (value).
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*
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* @static
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* @memberOf _
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* @since 4.0.0
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* @category Array
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* @param {Array} array The array to inspect.
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* @param {Function} [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) ? baseUniq(array, baseIteratee(iteratee, 2)) : [];
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}
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module.exports = uniqBy;
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