1 | import arrayFilter from './_arrayFilter.js';
|
---|
2 | import baseFilter from './_baseFilter.js';
|
---|
3 | import baseIteratee from './_baseIteratee.js';
|
---|
4 | import isArray from './isArray.js';
|
---|
5 |
|
---|
6 | /**
|
---|
7 | * Iterates over elements of `collection`, returning an array of all elements
|
---|
8 | * `predicate` returns truthy for. The predicate is invoked with three
|
---|
9 | * arguments: (value, index|key, collection).
|
---|
10 | *
|
---|
11 | * **Note:** Unlike `_.remove`, this method returns a new array.
|
---|
12 | *
|
---|
13 | * @static
|
---|
14 | * @memberOf _
|
---|
15 | * @since 0.1.0
|
---|
16 | * @category Collection
|
---|
17 | * @param {Array|Object} collection The collection to iterate over.
|
---|
18 | * @param {Function} [predicate=_.identity] The function invoked per iteration.
|
---|
19 | * @returns {Array} Returns the new filtered array.
|
---|
20 | * @see _.reject
|
---|
21 | * @example
|
---|
22 | *
|
---|
23 | * var users = [
|
---|
24 | * { 'user': 'barney', 'age': 36, 'active': true },
|
---|
25 | * { 'user': 'fred', 'age': 40, 'active': false }
|
---|
26 | * ];
|
---|
27 | *
|
---|
28 | * _.filter(users, function(o) { return !o.active; });
|
---|
29 | * // => objects for ['fred']
|
---|
30 | *
|
---|
31 | * // The `_.matches` iteratee shorthand.
|
---|
32 | * _.filter(users, { 'age': 36, 'active': true });
|
---|
33 | * // => objects for ['barney']
|
---|
34 | *
|
---|
35 | * // The `_.matchesProperty` iteratee shorthand.
|
---|
36 | * _.filter(users, ['active', false]);
|
---|
37 | * // => objects for ['fred']
|
---|
38 | *
|
---|
39 | * // The `_.property` iteratee shorthand.
|
---|
40 | * _.filter(users, 'active');
|
---|
41 | * // => objects for ['barney']
|
---|
42 | *
|
---|
43 | * // Combining several predicates using `_.overEvery` or `_.overSome`.
|
---|
44 | * _.filter(users, _.overSome([{ 'age': 36 }, ['age', 40]]));
|
---|
45 | * // => objects for ['fred', 'barney']
|
---|
46 | */
|
---|
47 | function filter(collection, predicate) {
|
---|
48 | var func = isArray(collection) ? arrayFilter : baseFilter;
|
---|
49 | return func(collection, baseIteratee(predicate, 3));
|
---|
50 | }
|
---|
51 |
|
---|
52 | export default filter;
|
---|