From: Robert Klemme <bob.news@...>
Date: 2003-05-21T22:57:31+09:00
Subject: Re: An Object Going Out Of Scope


"Mauricio Fern�ndez" <batsman.geo@yahoo.com> schrieb im Newsbeitrag
news:20030521095729.GA24238@student.ei.uni-stuttgart.de...
> On Wed, May 21, 2003 at 05:56:34PM +0900, Robert Klemme wrote:
> > >
> > > It seems you overlooked the fact that it is not implementable in
current
> > > Ruby, for it needs Procs to be rebound :)
> >
> > I'm not sure, whether I understand you correctly.  The solution below
does
> > work.  Why then is it not possible without rebinding procs?
>
> I meant my method, which is used like this
>
>   auto(:var1, :var2, :etc) do
>      ....
>   end
>
> ie.
>
> def auto(*vars, &block)
>    begin
>      block.rebind(binding).call    # rebind not in Ruby!!!
>    ensure
>      vars.each { |x| eval "#{x}.cleanup if #{x}" }
>    end
> end
>
> The idea is getting 'var = foo" inside the block to create the local in
> the outer scope (binding).

Ok, I see.  I distantly thought of that but dropped it since one does not
really need the identifiers. :-)

> You had better forget about this stupid thing of mine, and stay with the
> good, implementable thing :-)

I'll obediently do that. :-))

Kind regards

    robert