add Method
Add a key or keys to this KeySet.
add(value: Keys | Key, pred?: (key: Key) => boolean): KeySet
| Parameter | Type | Description |
|---|---|---|
| value | Keys | Key | A key or keys to add. |
| pred | (key: Key) => boolean | An optional predicate function that indicates whether a key should be added |
Returns - itself
Defined in
Last Updated: 08 January, 2020