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31 lines
1013 B
31 lines
1013 B
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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