Function err

err<T, E>(result: Result<T, E>): Option<E>
Converts a Result into an Option wrapping the error value.
Type Parameters
- T
- E
Parameters
- result: Result<T, E>
  Result to convert.
Returns Option<E>
None if the result is Ok, or Some wrapping the result error if it's Err.
- Defined in index.ts:110