1 | var arraySome = require('./_arraySome'),
|
2 | baseIteratee = require('./_baseIteratee'),
|
3 | baseSome = require('./_baseSome'),
|
4 | isArray = require('./isArray'),
|
5 | isIterateeCall = require('./_isIterateeCall');
|
6 |
|
7 | /**
|
8 | * Checks if `predicate` returns truthy for **any** element of `collection`.
|
9 | * Iteration is stopped once `predicate` returns truthy. The predicate is
|
10 | * invoked with three arguments: (value, index|key, collection).
|
11 | *
|
12 | * @static
|
13 | * @memberOf _
|
14 | * @since 0.1.0
|
15 | * @category Collection
|
16 | * @param {Array|Object} collection The collection to iterate over.
|
17 | * @param {Function} [predicate=_.identity] The function invoked per iteration.
|
18 | * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
|
19 | * @returns {boolean} Returns `true` if any element passes the predicate check,
|
20 | * else `false`.
|
21 | * @example
|
22 | *
|
23 | * _.some([null, 0, 'yes', false], Boolean);
|
24 | * // => true
|
25 | *
|
26 | * var users = [
|
27 | * { 'user': 'barney', 'active': true },
|
28 | * { 'user': 'fred', 'active': false }
|
29 | * ];
|
30 | *
|
31 | * // The `_.matches` iteratee shorthand.
|
32 | * _.some(users, { 'user': 'barney', 'active': false });
|
33 | * // => false
|
34 | *
|
35 | * // The `_.matchesProperty` iteratee shorthand.
|
36 | * _.some(users, ['active', false]);
|
37 | * // => true
|
38 | *
|
39 | * // The `_.property` iteratee shorthand.
|
40 | * _.some(users, 'active');
|
41 | * // => true
|
42 | */
|
43 | function some(collection, predicate, guard) {
|
44 | var func = isArray(collection) ? arraySome : baseSome;
|
45 | if (guard && isIterateeCall(collection, predicate, guard)) {
|
46 | predicate = undefined;
|
47 | }
|
48 | return func(collection, baseIteratee(predicate, 3));
|
49 | }
|
50 |
|
51 | module.exports = some;
|