From: Robert Klemme <bob.news@...>
Date: 2003-12-26T19:56:51+09:00
Subject: Re: Lexically scoped variables


"Eric Sunshine" <sunshine@sunshineco.com> schrieb im Newsbeitrag
news:200312210059.AA01896@sunshineco.com...
> On Sat, 20 Dec 2003 07:06:20 +0900, Gregory Millam wrote:
> > Received: Sat, 20 Dec 2003 06:47:53 +0900
> > And lo Eric wrote:
> > > scope {
> > > foo = BigObject.new
> > > ... manipulate foo ...
> > > }
> > Take an idea from File?
> > BigObject.new do |foo|
> > ... manipulate foo ...
> > end
>
> Thanks, but this proposal is very special-case, whereas I'm looking for a
> general purpose solution for automatic clean-up of variables in a
> long-running interactive environment, much like my scope{} solution
provides,
> or { and } blocks in C.  In my example, BigObject was used merely to
> illustrate that the user might be working with memory hungry objects in
> various ways.

How about:

Object.new.instance_eval do
    reclaimed = "foo"
    p reclaimed

    @reclaimed_too = "bar"
    p @reclaimed_too
end

# error
p reclaimed
# nil
p @reclaimed_too

    robert