From: Stefan Rusterholz <apeiros@...>
Date: 2007-02-18T00:33:25+09:00
Subject: Re: Oppinions on RCR for dup on immutable classes

unknown wrote:
> because, in ruby, all methods can be changed all the time:
> 
>    class C
>      def dup() raise "now you can't" end
>    end
> 
>    c = C.new
> 
>    c.dup rescue nil
> 
>    class << c
>      def dup() raise "now you can" end
>    end
> 
>    c.dup
> 
> just because an object responded to a message one time, at compile time, 
> or
> whatever - doesn't mean it will later.  this is the dynamic in 'dynamic
> languages.'
> 
> note that being able to dump singleton classes doesn't change this one 
> bit.
> 
> regards.
> 
> 
> -a

Care to explain why you chose defining a method with the sole purpose of 
raising an exception over removing the method instead?

My regards

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