Function getOrAddEntry

getOrAddEntry<K, V>(map: MapTypes<K, V>, key: K, value: V): V
If the given map contains an entry for the given key, returns its value, otherwise adds a new entry with the given value and returns that.
Type Parameters
- K
- V
Parameters
- map: MapTypes<K, V>
- key: K
- value: V
Returns V
Example
Simple multimap-like behaviour:
```
getOrAddEntry(mapOfArrays, key, []).push(value)
```
- Defined in src/map.ts:16