[plt-scheme] transformers after expansion no longer needed

On Jul 16, Jos Koot wrote:
> Thanks. But what when I import syntaxes from another module?

Then you must have the transformers present.  I think that what you're
talking about is some kind of tree shaker that removes unused
bindings.  (And that's not implemented.)

> ----- Original Message ----- 
> From: "Eli Barzilay" <eli at barzilay.org>
> To: "Jos Koot" <jos.koot at telefonica.net>
> Cc: <plt-scheme at list.cs.brown.edu>
> Sent: Wednesday, July 16, 2008 1:24 PM
> Subject: Re: [plt-scheme] transformers after expansion no longer needed
> 
> > On Jul 16, Jos Koot wrote:
> >> When running a module in DrScheme, the transformers used during
> >> expansion cannot be discarded, because they may be used in the
> >> interactions window. However, in many cases I no longer need the
> >> transformers after expansion. Is there a way to make them garbage
> >> collectable as soon as expansion is completed?
> > 
> > You can use `let-syntax' for that, or other forms of local macros
> > like:
> > 
> >  (define foo
> >    (let ()
> >      (define-syntax ...)
> >      blah))

-- 
          ((lambda (x) (x x)) (lambda (x) (x x)))          Eli Barzilay:
                  http://www.barzilay.org/                 Maze is Life!