mirror of
https://github.com/thangisme/notes.git
synced 2024-11-09 07:27:35 -05:00
40 lines
1.0 KiB
JavaScript
40 lines
1.0 KiB
JavaScript
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;
|