如果你保存散列后的密码，这确实很好，你需要准备另一套方法来验证用户。

If you store hashed passwords, which is a really good idea, you need to prepare an alternate way of authenticating the user.

youdao

为了生成运行更加快捷并易于维护的代码，使用散列表存储命令行选项并使用散列验证用户指定的输入，这种方法非常有帮助。

To produce code that runs faster and is easy to maintain, it makes far more sense to use a hash table that stores the command-line options, then USES the hash to validate the user-specified input.

youdao