From: han.holl@... (Han Holl)
Date: 2004-02-27T18:44:45+09:00
Subject: Re: Callback

Pit Capitain <pit@capitain.de> wrote in message  
> Alternative 1:
>        self.class.send :define_method, name, proc { obj.keys }
> 
> Alternative 2:
>        class << self; self; end.send :define_method, name, proc { obj.keys }
> 
[ cut ]
> Alternative 1 behaves more or less like your original version. The drawback of 
> both of them is that the method is defined in class A, but works only in one 
> instance of A.
> 
> Alternative 2 defines the method only in the one instance passed to callback.
> 
Thanks. This was what I wanted. In my case the class to add the 'cassette' method
to is a singleton, so I guess alternative 1 would be the most efficient.

Cheers,

Han Holl