From: Robert Dober <robert.dober@...>
Date: 2007-07-23T02:47:51+09:00
Subject: Re: How do you "undef_method" for a class method?

On 7/22/07, Chris Thiel <ccthiel@gmail.com> wrote:
> Well, not sure if there's a more elegant approach to this (and there
> probably is) but one way to do it would be to open up the class itself and
> redfine the method to do nothing or raise an exception. I'm curious to see
> if there *is* another way to do this, though.
Let me plead you not to top post first ;)
and then give you the answer

>
> Chris
>
>
> On 7/22/07, Dean Wampler <deanwampler@gmail.com> wrote:
> >
> > Module#undef_method and Module#remove_method work fine for instance
> > methods,
> > but if you specify a class method, your get an error that it doesn't
> > exist.
> > (I'm using ruby 1.8.6.)
> >
> > Is there a way to do this? TIA.
> >
> > Dean
> >
> > --
> > Dean Wampler
> > http://www.objectmentor.com
> > http://www.aspectprogramming.com
> > http://www.contract4j.org
> >
>
505/5 > cat remove_method.rb && ruby remove_method.rb
class A
  def A.hi
    "hello"
  end
end

p A.hi
class << A
  remove_method :hi
end
p A.hi
"hello"
remove_method.rb:11: undefined method `hi' for A:Class (NoMethodError)
robert@PC:~/log/ruby/ML 19:46:46

If memory serves you should not use undefine_method as it leaks.

HTH
Robert
-- 

We're on a mission from God. ~ Elwood,