From: Dave Thomas <Dave@...>
Date: 2000-10-31T23:53:19+09:00
Subject: [ruby-talk:5972] Re: Can singleton methods be removed?

"John Small" <jsmall@laser.net> writes:

> Evidently the Module.remove_method can't be applied
> to an instance of a class.

The class is effectively anonymous, so there's no immediate receiver
you can use. Even if there, was, 'remove_mthod' is private, so it
wouldn't work:

     foo.classs.remove_method :hello   #=> private method
     'remove_method' called


However, you can do it using 'class <<' notation.

     foo = "string"
     def foo.hello
       puts "hello"
     end

     foo.hello      #=> hello

     class <<foo
       remove_method :hello
     end

     foo.hello      #=> undefined method


Regards


Dave