| 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; |