From: Austin Ziegler <halostatue@...>
Date: 2005-03-30T05:30:04+09:00
Subject: Re: attr :<symbol>?

On Wed, 30 Mar 2005 05:03:48 +0900, B. K. Oxley (binkley)
<binkley@alumni.rice.edu> wrote:
> Florian Gross wrote:
> > class Meta
> >   def self.has_many(sym)
> >     ivar = :"@#{sym}"
> >     define_method(sym.to_sym) do
> >       new_value = instance_variable_get(ivar) || []
> >       instance_variable_set(ivar, new_value)
> >       new_value
> >     end
> >   end
> > end
> What is the difference between these two approaches?

Florian's will only work on Ruby 1.8 or later and avoids some of the
concerns that people have around "eval".

-austin
-- 
Austin Ziegler * halostatue@gmail.com
               * Alternate: austin@halostatue.ca