class Kleisli::Contracts::EitherOf

Public Instance Methods

monad_valid(val) click to toggle source
# File lib/kleisli/contracts.rb, line 30
def monad_valid(val)
  [Kleisli::Either::Left, Kleisli::Either::Right].
    include?(val.class)
end
valid?(val) click to toggle source
# File lib/kleisli/contracts.rb, line 34
def valid?(val)
  return false unless monad_valid(val) &&
    @inner_types.size == 2
  left_valid, _ = Contract.valid?(val.left, @inner_types.first)
  right_valid, _ = Contract.valid?(val.right, @inner_types.last)
  (val.left.nil? && right_valid) ||
  (val.right.nil? && left_valid)
end