From: Sylvain Le Gall <sylvain@le-gall.net>
To: caml-list@inria.fr
Subject: Re: Create a constraint between variant type and data list
Date: Fri, 17 Sep 2010 08:57:15 +0000 (UTC) [thread overview]
Message-ID: <slrni96bbb.skq.sylvain@gallu.homelinux.org> (raw)
In-Reply-To: <slrni82bc0.skq.sylvain@gallu.homelinux.org>
Hello all,
On 03-09-2010, Sylvain Le Gall <sylvain@le-gall.net> wrote:
> Hello all,
>
> I would like to somehow enforce that a variant type is associated with
> an entry in a data list.
>
> For example,
>
> I would like to define:
>
> type license = GPL | LGPL
>
> and
>
> let data = [ GPL, "GNU Public license";
> LGPL, "GNU Lesser General Public license" ]
>
>
Thank you for all your answer. I pick the one from oleg@okmij.org, I
hide the license with a type and the creation of license is done in the
module. The to_string/from_string is done by registering extra data in
an Hashtable.
See the implementation here.
http://darcs.ocamlcore.org/cgi-bin/darcsweb.cgi?r=oasis;a=headblob;f=/src/oasis/OASISLicense.mli
http://darcs.ocamlcore.org/cgi-bin/darcsweb.cgi?r=oasis;a=headblob;f=/src/oasis/OASISLicense.ml
Regards,
Sylvain Le Gall
next prev parent reply other threads:[~2010-09-17 8:57 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-03 17:16 Sylvain Le Gall
2010-09-03 17:38 ` [Caml-list] " bluestorm
2010-09-03 21:28 ` Sylvain Le Gall
2010-09-17 7:29 ` [Caml-list] " Maxence Guesdon
2010-09-03 18:51 ` [Caml-list] " Martin Jambon
2010-09-03 19:39 ` Ashish Agarwal
2010-09-03 21:13 ` Maxence Guesdon
2010-09-03 21:25 ` Sylvain Le Gall
2010-09-04 6:35 ` [Caml-list] " Julien Signoles
2010-09-04 6:40 ` Julien Signoles
2010-09-04 16:25 ` Anil Madhavapeddy
2010-09-17 8:57 ` Sylvain Le Gall [this message]
2010-09-04 10:17 oleg
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