proposing a simpler mechanism R. Kent Dybvig (13 Nov 2009 03:00 UTC)
Re: proposing a simpler mechanism Thomas Bushnell BSG (13 Nov 2009 04:23 UTC)
Re: proposing a simpler mechanism Taylor R Campbell (13 Nov 2009 04:31 UTC)
Re: proposing a simpler mechanism R. Kent Dybvig (13 Nov 2009 16:22 UTC)
Re: proposing a simpler mechanism Per Bothner (13 Nov 2009 16:56 UTC)
Re: proposing a simpler mechanism Thomas Bushnell BSG (13 Nov 2009 04:54 UTC)
Re: proposing a simpler mechanism Alex Queiroz (13 Nov 2009 13:44 UTC)
Re: proposing a simpler mechanism Marc Feeley (13 Nov 2009 14:24 UTC)
Re: proposing a simpler mechanism Thomas Bushnell BSG (13 Nov 2009 18:39 UTC)
Re: proposing a simpler mechanism Thomas Bushnell BSG (13 Nov 2009 18:36 UTC)
Re: proposing a simpler mechanism Alex Queiroz (13 Nov 2009 19:08 UTC)
Re: proposing a simpler mechanism Thomas Bushnell BSG (13 Nov 2009 19:21 UTC)
Re: proposing a simpler mechanism David Van Horn (13 Nov 2009 19:25 UTC)
Re: proposing a simpler mechanism Thomas Bushnell BSG (13 Nov 2009 19:36 UTC)
Re: proposing a simpler mechanism David Van Horn (13 Nov 2009 19:58 UTC)
Re: proposing a simpler mechanism Arthur A. Gleckler (13 Nov 2009 20:25 UTC)
Re: proposing a simpler mechanism David Van Horn (12 Jan 2010 18:51 UTC)

Re: proposing a simpler mechanism Alex Queiroz 13 Nov 2009 12:41 UTC

Hallo,

On 11/13/09, Thomas Bushnell BSG <xxxxxx@becket.net> wrote:
> I'll admit that, along with Kent Dybvig, I'm no fan of arity inspection,
>  for a jillion reasons.  I think it's ill-conceived.
>
>  But if it must happen, how about this:
>
>  (procedure-arity PROC) returns two values, first, the minimum number of
>  arguments, and second, whether additional arguments are permissible.
>  This exactly covers the possibilities for standard Scheme.  It is
>  trivial to implement given any of the common facilities out there.  It
>  is clear and simple and easy to specify.
>

     Unlike Dybvig's proposal, this allocates the multiple return
values in the heap in implementations that implement (values) as a
vector constructor.

Cheers,
--
-alex
@asandroq
http://www.ventonegro.org/