From: Dean Wampler <deanwampler@...>
Date: 2007-07-23T22:34:56+09:00
Subject: Re: How do you "undef_method" for a class method?

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On 7/22/07, dblack@wobblini.net <dblack@wobblini.net> wrote:
>
> Hi --
>
> On Mon, 23 Jul 2007, Xavier Noria wrote:
>
> > El Jul 22, 2007, a las 6:44 PM, Dean Wampler escribi=F3:
> >
> >> 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.)
> >
> > You need to get into the singleton class:
> >
> > (class << Foo; self; end).send(:remove_method, :method)
>
> You're doing too much work :-)  See Robert D.'s answer:
>
>    class << Foo
>      remove_method :method
>    end
>
> Once you're in the class definition body, you can just go ahead and do
> things; you don't have to grab the class and address it
> programmatically unless there's a specific reason.



That did it. Thanks. It didn't occur to me to open the singleton class on a
class itself, as opposed to opening the singleton class for an object. I
assume that both are
called singleton classes (?).

dean

David
>
> --
> * Books:
>    RAILS ROUTING (new! http://www.awprofessional.com/title/0321509242)
>    RUBY FOR RAILS (http://www.manning.com/black)
> * Ruby/Rails training
>      & consulting:  Ruby Power and Light, LLC (http://www.rubypal.com)
>



--=20
Dean Wampler
http://www.objectmentor.com
http://www.aspectprogramming.com
http://www.contract4j.org

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