From: Eric Mahurin <eric_mahurin@...>
Date: 2005-10-10T10:34:36+09:00
Subject: Re: using lambda/Proc can prevent a lot of garbage collection

--- Gavin Kistner <gavin@refinery.com> wrote:

> On Oct 9, 2005, at 8:26 AM, Eric Mahurin wrote:
> > 2. Proc#binding should give a binding that only has
> variables
> > that the block accesses (determined when the compiled).
> >
> > 3. Proc#binding should hold weak references to variables
> that
> > the block doesn't access (at compile-time).
> 
> I believe that detecting references at compile time is tricky
> in a  
> dynamic language.  Is there not a way in Ruby to retrieve a
> local  
> variable whose name is stored in another string? (Perhaps
> there isn't.

Compile-time meaning compile-time of the block - when the block
is created.  I think of this as at compile-time, but with the
ruby interpreter it may be at run-time.  I see no reason why it
shouldn't be able to determine what variables a block accesses
when it is created - with the exception of eval in the block
and eval using Proc#binding.


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