func and<V>(V) -> Validator<Self.T> Produces a new
Validator by combining self with another validator using “and” logic.func mapFailures ((ValidationFailure ) -> ValidationFailure ) -> Validator<Self.T> Map any failure resulting from the validation to a new
ValidationFailure .func or<V>(V) -> Validator<Self.T> Produces a new
Validator by combining self with another validator using “or” logic.