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pick
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Return a partial object copy containing only specified keys.
bash
npm install @stdlib/utils-pick
javascript
var pick = require( '@stdlib/utils-pick' );
#### pick( obj, keys )
Returns a partial copy of an object. The returned object contains only specified keys.
javascript
var obj1 = {
'a': 1,
'b': 2,
'c': 3
};
var obj2 = pick( obj1, 'b' );
// returns { 'b': 2 }
var obj3 = pick( obj1, [ 'b', 'c' ] );
// returns { 'b': 2, 'c': 3 }
If a key does not exist as an own property in a source object, the key is ignored.
javascript
var obj1 = {
'a': 1,
'b': 2,
'c': 3
};
var obj2 = pick( obj1, 'd' );
// returns {}
javascript
var pick = require( '@stdlib/utils-pick' );
var obj1 = {
'a': 1,
'b': 2,
'c': 3,
'd': 4,
'e': 5
};
var obj2 = pick( obj1, [ 'b', 'c', 'e' ] );
// returns { 'b': 2, 'c': 3, 'e': 5 }
@stdlib/utils-pick-by][@stdlib/utils/pick-by]: return a partial object copy containing properties for which a predicate (function) returns a truthy value.
