xor method

Option<T> xor(Option<T> other)

Returns Some if exactly one of this Option and other is Some, otherwise returns None.

Returns:

• This Option if this Option is Some and other is None.
• other if this Option is None and other is Some.
• None otherwise.

See also: Rust: Option::xor()

Implementation

Option<T> xor(Option<T> other) {
  return switch ((this, other)) {
    (Some(), None()) => this,
    (None(), Some()) => other,
    _ => None(),
  };
}