okOrElse<E> method

Result<T, E> okOrElse<E>(E elseFn())

Converts this Option<T> into a Result<T, E> using the returned value from elseFn if None.

elseFn will only be evaluated if this Option is None.

Returns:

• Ok<T, E> if this Option is Some<T>.
• Err<T, E> using the value returned by elseFn if this Option is None<T>.

See also: Rust: Option::ok_or_else()

Implementation

Result<T, E> okOrElse<E>(E Function() elseFn) => switch (this) {
	Some(:T v) => Ok(v),
	None() => Err(elseFn())
};