# encoding: utf-8 module Veritas class Relation module Operation # A mixin for Unary relations module Unary include Veritas::Operation::Unary # Initialize a Unary relation # # @param [Relation] operand # # @return [undefined] # # @api private def initialize(operand) super @header = operand.header end end # module Unary end # module Operation end # class Relation end # module Veritas