From: Alain Frisch <alain@frisch.fr>
To: caml-list <caml-list@inria.fr>
Subject: Re: [Caml-list] Re: module typing issue
Date: Mon, 28 Mar 2011 09:53:52 +0200 [thread overview]
Message-ID: <4D903E90.4080907@frisch.fr> (raw)
In-Reply-To: <20110325190129.GU10028@localhost>
On 03/25/2011 08:01 PM, Guillaume Yziquel wrote:
> type error = private int
>
> external get_error : unit -> error = "zzz"
>
> You get some error level that you can pattern match as an int, and this
> also enforces that all values of type error come from a call to
> get_error.
You need to coerce explicitly from type error to type int (... :> int),
so this is not really different from defining error as an abstract type
and exposing a function error->int.
-- Alain
next prev parent reply other threads:[~2011-03-28 7:54 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-25 8:34 [Caml-list] " Joel Reymont
2011-03-25 8:44 ` [Caml-list] " Joel Reymont
2011-03-25 14:17 ` Joel Reymont
2011-03-25 15:46 ` Andreas Rossberg
2011-03-25 15:57 ` Joel Reymont
2011-03-25 16:04 ` Andreas Rossberg
2011-03-25 16:42 ` Guillaume Yziquel
2011-03-25 16:59 ` Andreas Rossberg
2011-03-25 19:01 ` Guillaume Yziquel
2011-03-25 19:13 ` Andreas Rossberg
2011-03-28 7:53 ` Alain Frisch [this message]
2011-03-28 10:33 ` Guillaume Yziquel
2011-03-28 11:29 ` David Allsopp
2011-03-28 11:58 ` Guillaume Yziquel
2011-03-28 12:11 ` David Allsopp
2011-03-28 12:29 ` Guillaume Yziquel
2011-03-28 12:23 ` Alain Frisch
2011-03-28 12:39 ` Guillaume Yziquel
2011-03-28 11:32 ` David Allsopp
2011-03-28 12:02 ` Guillaume Yziquel
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