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“Collection” Methods

_.partition(collection, [predicate=_.identity])

source npm package

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).

引入版本

3.0.0

参数
collection (Array|Object) : The collection to iterate over.
[predicate=_.identity] (Function) : The function invoked per iteration.

返回值
(Array) : Returns the array of grouped elements.

示例
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']]