From: Alan Chen <alan@...>
Date: 2002-09-14T02:41:54+09:00
Subject: Re: private variables

On Fri, Sep 13, 2002 at 11:07:26PM +0900, Paul Brannan wrote:
> On Thu, Sep 12, 2002 at 11:17:03PM +0900, Dave Thomas wrote:
> >   _a   - localized block variable,
> > 
> >        _a = 1
> > 
> >        10.times {|_a| puts _a}
> > 
> >        puts _a  # => 1
> 
> Interesting idea.  
> 
> Would non-localized block variables:
>   a) retain their original behavior (that is, they are local if the
>      variable already exists in the outer block, otherwise they are
>      non-local), or
>   b) always be non-local?
> 
> I like (b) since it's cleaner, but (a) because it doesn't break any
> code.
> 
> On a side note, I wish there were another symbol that could be used in
> place of _.  It makes variables look asymmetric (unless you write _a_).
> 
> Paul

Wasn't there some talk about using symbols?  It's not symmetric, but for
some reason it looks better to me.

a = 1

10.times { |:a| puts a }

puts a # => 1


-- 
Alan Chen
Digikata LLC
http://digikata.com