Home > rc-js-util > mapUnion
Returns a map with keys from both A and B. If both A and B have the same key the value from B will be used.
Signature:
export declare function mapUnion<TKey, TIem>(a: ReadonlyMap<TKey, TIem>, b: ReadonlyMap<TKey, TIem>): Map<TKey, TIem>;
| Parameter | Type | Description | 
|---|---|---|
| a | ReadonlyMap<TKey, TIem> | |
| b | ReadonlyMap<TKey, TIem> | 
Returns:
Map<TKey, TIem>
See mapUnion().