如何删除Ruby中的attr_accessor [英] How to delete attr_accessor in ruby

问题描述

在ruby中，如果我有一个类greet并具有方法say_hi，当name是类greet的实例变量时，该方法打印出"Hello #{@name}"，并且我允许通过添加@name attr_accessor :name，所以现在我可以直接更改@name.

In ruby, if I have a class greet and has method say_hi that prints out "Hello #{@name}" when name is a instance variable of class greet, and I allow access to @name by adding in the attr_accessor :name, so now I can directly change @name.

但是，如果我不再希望人们能够直接更改@name，该如何删除该attr_accessor?

But how do I remove this attr_accessor if I no longer want people to be able to change @name directly?

推荐答案

您不能拥有课程greet，所以我想您还有其他内容，例如A.

You cannot have a class greet, so I suppose you have something else, say A.

class A
  undef :name
  undef :name=
end

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