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x/lodash/unzip.js

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