andThen<U> method

Result<U, E> andThen<U>(Result<U, E> fn(T))

Returns a Result value as Err<U, E> if this Result is Err<T, E>, otherwise calls fn with the held Ok value and returns the returned Result.

See also: Rust: Result::and_then()

Implementation

Result<U, E> andThen<U>(Result<U, E> Function(T) fn) => switch (this) {
	Ok(value: T value) => fn(value),
	Err(value: E value) => Err(value)
};