1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
var arrayMap = require('./_arrayMap'),
baseIteratee = require('./_baseIteratee'),
basePickBy = require('./_basePickBy'),
getAllKeysIn = require('./_getAllKeysIn');
/**
* Creates an object composed of the `object` properties `predicate` returns
* truthy for. The predicate is invoked with two arguments: (value, key).
*
* @static
* @memberOf _
* @since 4.0.0
* @category Object
* @param {Object} object The source object.
* @param {Function} [predicate=_.identity] The function invoked per property.
* @returns {Object} Returns the new object.
* @example
*
* var object = { 'a': 1, 'b': '2', 'c': 3 };
*
* _.pickBy(object, _.isNumber);
* // => { 'a': 1, 'c': 3 }
*/
function pickBy(object, predicate) {
if (object == null) {
return {};
}
var props = arrayMap(getAllKeysIn(object), function(prop) {
return [prop];
});
predicate = baseIteratee(predicate);
return basePickBy(object, props, function(value, path) {
return predicate(value, path[0]);
});
}
module.exports = pickBy;
|
