Function fold

fold<T, U>(onSome: (value: T) => U, onNone: () => U, option: Option<T>): U
Applies the onSome function to the contained value, otherwise it computes a default using onNone.
Type Parameters
- T
- U
Parameters
- onSome: (value: T) => U
  Function to evaluate if the option is Some.
- onNone: () => U
  Function to evaluate if the option is None.
- option: Option<T>
  Option containing the value to fold,
Returns U
Folded option value.
- Defined in index.ts:228