ruby - Ruby中如何返回最开始的程序流程

Question

我的 Ruby 解决方案中有一个 Player 类。在类里面我可以定义两个玩家。我需要进行验证，如果玩家的名字相同，我需要发出一条消息，如果它们相同，我需要将我的程序返回到开头。下面是我的代码:

class Player
  print "First player, put your name then press ENTER: "
  name1 = gets.chomp
  print "Second player, put your name then press ENTER: "
  name2 = gets.chomp

  if name1.eql?(name2)
    abort "Put the different name for players!"
  end

end

Answer 1

你需要一个循环

name1 = name2 = nil
while name1 == name2
  print "First player, put your name then press ENTER: "
  name1 = gets.chomp
  print "Second player, put your name then press ENTER: "
  name2 = gets.chomp

  if name1 == name2
    print "Put the different name for players!"
  end
end

您可以将它放入一个对象中，但事实上，您的类根本没有任何意义。您定义了一个类，但随后您将所有代码放入类的主体中，甚至没有将其包装到方法中。

应该是

class Player
  def play
    name1 = name2 = nil
    while name1 == name2
      print "First player, put your name then press ENTER: "
      name1 = gets.chomp
      print "Second player, put your name then press ENTER: "
      name2 = gets.chomp

      if name1 == name2
        print "Put the different name for players!"
      end
    end
  end
end

然后你可以不调用它

player = Player.new
player.play