From: Eric Mahurin <eric_mahurin@...>
Date: 2005-06-30T03:14:22+09:00
Subject: Re: yield does not take a block

--- Daniel Brockman <daniel@brockman.se> wrote:
> You didn't respond to my question:
> 
> >> I don't see how returning a new class could be useful in
> any way.
> >> For example, what should happen if you say this?
> >>
> >>    class Numeric ; def infinite? ; false end end

The non-destructive version of this would be (simple
inheritance):

class MyNumeric < Numeric; def infinite?;false;end;end

I know that is not what you wanted and not nearly as useful.  I
was just making the point that this useful behavior (modifying
classes at run-time) does come at a cost: it ties ruby to a
very dynamic object model that makes it difficult for ruby to
do certain types of optimizations.



		
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