return-it -> ???

return-it -> ???

[Thien-Thi Nguyen]

Guile 1.8 dropped `return-it'.
Does Guile 1.9 have anything to replace it?

thi

Re: return-it -> ???

[Ludovic Courtès]

Hi,

Thien-Thi Nguyen <ttn@gnuvola.org> writes:

> Guile 1.8 dropped `return-it'.
> Does Guile 1.9 have anything to replace it?

What’s that?

Thanks,
Ludo’.

Re: return-it -> ???

[Thien-Thi Nguyen]

() ludo@gnu.org (Ludovic Courtès)
() Mon, 11 Jan 2010 23:05:34 +0100

   > Guile 1.8 dropped `return-it'.
   > Does Guile 1.9 have anything to replace it?

   What’s that?

It is like Common Lisp `prog1'.

thi

Re: return-it -> ???

[Andreas Rottmann]

Thien-Thi Nguyen <ttn@gnuvola.org> writes:

> () ludo@gnu.org (Ludovic Courtès)
> () Mon, 11 Jan 2010 23:05:34 +0100
>
>    > Guile 1.8 dropped `return-it'.
>    > Does Guile 1.9 have anything to replace it?
>
>    What’s that?
>
> It is like Common Lisp `prog1'.
>
I think in Scheme this is more commonly called `begin0', and at
least PLT and Gauche provide it.

Regards, Rotty
-- 
Andreas Rottmann -- <http://rotty.yi.org/>

Re: return-it -> ???

[Andy Wingo]

On Mon 11 Jan 2010 10:51, Thien-Thi Nguyen <ttn@gnuvola.org> writes:

> Guile 1.8 dropped `return-it'.
> Does Guile 1.9 have anything to replace it?

(define return-it
  (case-lambda
    (() #f)
    ((x . _) x)))

Andy
-- 
http://wingolog.org/

Re: return-it -> ???

[Thien-Thi Nguyen]

() Andy Wingo <wingo@pobox.com>
() Tue, 12 Jan 2010 20:47:02 +0100

   (define return-it
     (case-lambda
       (() #f)
       ((x . _) x)))

Is something like this already in Guile?

thi

Re: return-it -> ???

[Andy Wingo]

On Wed 13 Jan 2010 08:06, Thien-Thi Nguyen <ttn@gnuvola.org> writes:

> () Andy Wingo <wingo@pobox.com>
> () Tue, 12 Jan 2010 20:47:02 +0100
>
>    (define return-it
>      (case-lambda
>        (() #f)
>        ((x . _) x)))
>
> Is something like this already in Guile?

Nope. Probably won't be, either.

I think basically if you want a quick port to 1.9, you should make a
module that shims 1.9 to have a more 1.4-like interface, and have all of
your code use it. `return-it' can go there. Then you can adapt your code
later, if you want, or keep using that shim if you want.

Andy
-- 
http://wingolog.org/

Re: return-it -> ???

[Thien-Thi Nguyen]

() Andy Wingo <wingo@pobox.com>
() Wed, 13 Jan 2010 21:04:13 +0100

   Nope. Probably won't be, either.

OK.

   I think basically if you want a quick port to 1.9, you should
   make a module that shims 1.9 to have a more 1.4-like interface,
   and have all of your code use it.  `return-it' can go there.
   Then you can adapt your code later, if you want, or keep using
   that shim if you want.

Sounds reasonable.

thi