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45 lines
1.3 KiB
45 lines
1.3 KiB
var arrayFilter = require('./_arrayFilter'), |
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arrayMap = require('./_arrayMap'), |
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baseProperty = require('./_baseProperty'), |
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baseTimes = require('./_baseTimes'), |
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isArrayLikeObject = require('./isArrayLikeObject'); |
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/* Built-in method references for those with the same name as other `lodash` methods. */ |
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var nativeMax = Math.max; |
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/** |
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* This method is like `_.zip` except that it accepts an array of grouped |
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* elements and creates an array regrouping the elements to their pre-zip |
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* configuration. |
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* |
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* @static |
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* @memberOf _ |
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* @since 1.2.0 |
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* @category Array |
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* @param {Array} array The array of grouped elements to process. |
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* @returns {Array} Returns the new array of regrouped elements. |
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* @example |
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* |
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* var zipped = _.zip(['a', 'b'], [1, 2], [true, false]); |
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* // => [['a', 1, true], ['b', 2, false]] |
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* |
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* _.unzip(zipped); |
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* // => [['a', 'b'], [1, 2], [true, false]] |
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*/ |
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function unzip(array) { |
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if (!(array && array.length)) { |
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return []; |
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} |
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var length = 0; |
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array = arrayFilter(array, function(group) { |
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if (isArrayLikeObject(group)) { |
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length = nativeMax(group.length, length); |
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return true; |
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} |
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}); |
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return baseTimes(length, function(index) { |
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return arrayMap(array, baseProperty(index)); |
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}); |
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} |
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module.exports = unzip;
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