class Object
  def maybe
    Maybe.new(self)
  end
end

class Maybe
  def initialize(value)
    @value = value
  end 

  def method_missing(method_name, * args)
    puts "method_missing invoked:#{@value}. #{method_name}"
    if @value and @value.respond_to?(method_name)
        Maybe.new(@value.send(method_name, *args))
      else
        @value = nil
        self
    end
  end 

  def just
    if @value == nil
      "nil"
    else 
      @value
    end
  end
end