1 | var createAggregator = require('./_createAggregator');
|
2 |
|
3 | /**
|
4 | * Creates an array of elements split into two groups, the first of which
|
5 | * contains elements `predicate` returns truthy for, the second of which
|
6 | * contains elements `predicate` returns falsey for. The predicate is
|
7 | * invoked with one argument: (value).
|
8 | *
|
9 | * @static
|
10 | * @memberOf _
|
11 | * @since 3.0.0
|
12 | * @category Collection
|
13 | * @param {Array|Object} collection The collection to iterate over.
|
14 | * @param {Function} [predicate=_.identity] The function invoked per iteration.
|
15 | * @returns {Array} Returns the array of grouped elements.
|
16 | * @example
|
17 | *
|
18 | * var users = [
|
19 | * { 'user': 'barney', 'age': 36, 'active': false },
|
20 | * { 'user': 'fred', 'age': 40, 'active': true },
|
21 | * { 'user': 'pebbles', 'age': 1, 'active': false }
|
22 | * ];
|
23 | *
|
24 | * _.partition(users, function(o) { return o.active; });
|
25 | * // => objects for [['fred'], ['barney', 'pebbles']]
|
26 | *
|
27 | * // The `_.matches` iteratee shorthand.
|
28 | * _.partition(users, { 'age': 1, 'active': false });
|
29 | * // => objects for [['pebbles'], ['barney', 'fred']]
|
30 | *
|
31 | * // The `_.matchesProperty` iteratee shorthand.
|
32 | * _.partition(users, ['active', false]);
|
33 | * // => objects for [['barney', 'pebbles'], ['fred']]
|
34 | *
|
35 | * // The `_.property` iteratee shorthand.
|
36 | * _.partition(users, 'active');
|
37 | * // => objects for [['fred'], ['barney', 'pebbles']]
|
38 | */
|
39 | var partition = createAggregator(function(result, value, key) {
|
40 | result[key ? 0 : 1].push(value);
|
41 | }, function() { return [[], []]; });
|
42 |
|
43 | module.exports = partition;
|