From: mengx@...
Date: 2002-07-17T05:33:25+09:00
Subject: Re: alias_method problem

Thanks. Using "method_defined?" worked around the problem.


> From POP3 Tue Jul 16 16:22:52 EDT 2002
> Date: Wed, 17 Jul 2002 05:22:16 +0900
> Posted: Tue, 16 Jul 2002 15:28:01 -0500
> From: "Hal E. Fulton" <hal9000@hypermetrics.com>
> Subject: Re: alias_method problem
> To: ruby-talk@ruby-lang.org (ruby-talk ML)
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> ----- Original Message ----- 
> From: "Steve Tuckner" <STUCKNER@MULTITECH.COM>
> To: "ruby-talk ML" <ruby-talk@ruby-lang.org>
> Sent: Tuesday, July 16, 2002 3:09 PM
> Subject: RE: alias_method problem
> 
> 
> > I too have run in to this and implemented an ugly kludge to deal with it
> > (instead of taking the time to figure it out).
> > 
> > class A
> >    $aliased = $aliased || 0
> > 
> >    if $aliased == 0 then
> >       #  method "newone" is defined in a different file.
> >       alias_method :oldone, :newone
> >       def newone
> >          oldone
> >       end
> >    end
> >    $aliased += 1
> > end
> 
> Hmmmm... I haven't tested this, but here's a
> thought:
> 
> Could you test the value of "defined? oldone"
> rather than resorting to a global variable?
> Still a kludge, but maybe less so...
> 
> Hal
>