Ruby do(repeat) until

Repeat.rb

def Repeat(&block)
  _RepeatUntil = Class.new {
    def repeat(&block)
      block.call
      @action = block
      self
    end

    def until(&block)
      until result = block.call
        @action.call
      end
      result
    end
  }
  _RepeatUntil.new.repeat(&block)
end

input = Repeat { print "Please, type something: " }.until {
  value = gets.chomp
  value.length > 0 && value
}
puts "typed: input"