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;