| var apply = require('./_apply'), | |
| arrayMap = require('./_arrayMap'), | |
| unzip = require('./unzip'); | |
| /** | |
| * This method is like `_.unzip` except that it accepts `iteratee` to specify | |
| * how regrouped values should be combined. The iteratee is invoked with the | |
| * elements of each group: (...group). | |
| * | |
| * @static | |
| * @memberOf _ | |
| * @since 3.8.0 | |
| * @category Array | |
| * @param {Array} array The array of grouped elements to process. | |
| * @param {Function} [iteratee=_.identity] The function to combine | |
| * regrouped values. | |
| * @returns {Array} Returns the new array of regrouped elements. | |
| * @example | |
| * | |
| * var zipped = _.zip([1, 2], [10, 20], [100, 200]); | |
| * // => [[1, 10, 100], [2, 20, 200]] | |
| * | |
| * _.unzipWith(zipped, _.add); | |
| * // => [3, 30, 300] | |
| */ | |
| function unzipWith(array, iteratee) { | |
| if (!(array && array.length)) { | |
| return []; | |
| } | |
| var result = unzip(array); | |
| if (iteratee == null) { | |
| return result; | |
| } | |
| return arrayMap(result, function(group) { | |
| return apply(iteratee, undefined, group); | |
| }); | |
| } | |
| module.exports = unzipWith; |