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
38
39
40
41
42
|
var baseFlatten = require('../internal/baseFlatten'),
bindCallback = require('../internal/bindCallback'),
pickByArray = require('../internal/pickByArray'),
pickByCallback = require('../internal/pickByCallback'),
restParam = require('../function/restParam');
/**
* Creates an object composed of the picked `object` properties. Property
* names may be specified as individual arguments or as arrays of property
* names. If `predicate` is provided it is invoked for each property of `object`
* picking the properties `predicate` returns truthy for. The predicate is
* bound to `thisArg` and invoked with three arguments: (value, key, object).
*
* @static
* @memberOf _
* @category Object
* @param {Object} object The source object.
* @param {Function|...(string|string[])} [predicate] The function invoked per
* iteration or property names to pick, specified as individual property
* names or arrays of property names.
* @param {*} [thisArg] The `this` binding of `predicate`.
* @returns {Object} Returns the new object.
* @example
*
* var object = { 'user': 'fred', 'age': 40 };
*
* _.pick(object, 'user');
* // => { 'user': 'fred' }
*
* _.pick(object, _.isString);
* // => { 'user': 'fred' }
*/
var pick = restParam(function(object, props) {
if (object == null) {
return {};
}
return typeof props[0] == 'function'
? pickByCallback(object, bindCallback(props[0], props[1], 3))
: pickByArray(object, baseFlatten(props));
});
module.exports = pick;
|
