mirror of
https://github.com/taixingyiji/openit.git
synced 2025-11-04 00:02:28 +00:00
44 lines
1.5 KiB
JavaScript
44 lines
1.5 KiB
JavaScript
var createAggregator = require('./_createAggregator');
|
|
|
|
/**
|
|
* Creates an array of elements split into two groups, the first of which
|
|
* contains elements `predicate` returns truthy for, the second of which
|
|
* contains elements `predicate` returns falsey for. The predicate is
|
|
* invoked with one argument: (value).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @since 3.0.0
|
|
* @category Collection
|
|
* @param {Array|Object} collection The collection to iterate over.
|
|
* @param {Function} [predicate=_.identity] The function invoked per iteration.
|
|
* @returns {Array} Returns the array of grouped elements.
|
|
* @example
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'age': 36, 'active': false },
|
|
* { 'user': 'fred', 'age': 40, 'active': true },
|
|
* { 'user': 'pebbles', 'age': 1, 'active': false }
|
|
* ];
|
|
*
|
|
* _.partition(users, function(o) { return o.active; });
|
|
* // => objects for [['fred'], ['barney', 'pebbles']]
|
|
*
|
|
* // The `_.matches` iteratee shorthand.
|
|
* _.partition(users, { 'age': 1, 'active': false });
|
|
* // => objects for [['pebbles'], ['barney', 'fred']]
|
|
*
|
|
* // The `_.matchesProperty` iteratee shorthand.
|
|
* _.partition(users, ['active', false]);
|
|
* // => objects for [['barney', 'pebbles'], ['fred']]
|
|
*
|
|
* // The `_.property` iteratee shorthand.
|
|
* _.partition(users, 'active');
|
|
* // => objects for [['fred'], ['barney', 'pebbles']]
|
|
*/
|
|
var partition = createAggregator(function(result, value, key) {
|
|
result[key ? 0 : 1].push(value);
|
|
}, function() { return [[], []]; });
|
|
|
|
module.exports = partition;
|