Pipeline programming

test.rb

class Object
    def true?
        return unless self
        tmp = yield
        return tmp
    end

    def else
        return yield unless self
        self
    end
end

(1 + 1 == 3).true? { [3,4,5] }
            .else { [1,2] }
            .filter{ |item| (item % 2 == 0) }
            .each { |item| puts "ITEM #{item}" }
# print 2