Function computeIfPresent

computeIfPresent<K, V>(map: Map<K, V>): ((key: K, remappingFunction: ((key: K, value: V) => undefined | V)) => undefined | V)
Mutation

Example
Set a Map entry if the key is present
```
const map = new Map([[1, 2]]);
computeIfPresent(map)(1, (key, value) => value + 1);
console.log(map); // Map([[1, 3]])
```
Type Parameters
- K
  
  the Map key type
- V
  
  the Map value type
Parameters
- map: Map<K, V>
  
  the Map to set the entry
Returns ((key: K, remappingFunction: ((key: K, value: V) => undefined | V)) => undefined | V)
- - (key: K, remappingFunction: ((key: K, value: V) => undefined | V)): undefined | V
  - Parameters
    - key: K
    - remappingFunction: ((key: K, value: V) => undefined | V)
      
      (key: K, value: V): undefined | V
      
      Parameters
      
      key: K
      
      value: V
      
      Returns undefined | V
    Returns undefined | V
- Defined in packages/map/src/computeIfPresent.ts:19

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