ruby - 如何跳转到ruby中的一行

Question

我正在用 ruby​​ 做一个密码生成器，当我到达代码的某个点时，如果用户说他想重试生成密码，我需要返回。

print "do you want to retry to generate the password? [y/n]"
    retrypwd = gets.chomp
    if retrypwd == y
    (code to jump to some lines ago)
    elsif retrypwd == n
    print "Ok, It'll be for the next time"
end

Answer 1

诀窍是使用循环并根据您的期望中断或重复它:

def try_again?
  loop do
    print "Would you like to try again? Y/N"
    again = gets.chomp.capitalize

    case (again)
    when 'N'
      return false
    when 'Y'
      return true
    else
      puts "Huh? I don't know what that means."
    end
  end
end

然后你可以将它合并到你的主程序中:

begin
  try_password
end while try_again?

您将不断尝试输入密码，直到 try_again? 返回 false，如果您键入“N”就会出现这种情况。