From: Jean-Christophe Filliatre <filliatr@lri.fr>
To: "Merijn de Jonge" <merijn.de.jonge@gmail.com>
Cc: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] Writing Identity Functors (or Wrapper modules) in OCAML
Date: Mon, 27 Feb 2006 16:06:45 +0100 [thread overview]
Message-ID: <17411.5509.49103.254957@gargle.gargle.HOWL> (raw)
In-Reply-To: <f40e02a60602270649w5959ac06ldf2bf1f9820bbb72@mail.gmail.com>
Merijn de Jonge writes:
>
> I've problems in writing an Identity Functor in OCAML that I want to use as
> a wrapper module.
A type representation is missing: you should write your wrapper as
======================================================================
module Wrapper (X: IHelloWorld) : IHelloWorld =
struct
type helloWorldType = X.helloWorldType = Hello | World
let hello = X.hello
end
======================================================================
See the paragraph "Re-exported variant type or record type: an
equation, a representation." in section 6.8.1 of the Ocaml manual
(http://caml.inria.fr/pub/docs/manual-ocaml/manual016.html)
Hope this helps,
--
Jean-Christophe Filliâtre (http://www.lri.fr/~filliatr)
prev parent reply other threads:[~2006-02-27 15:07 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-27 14:49 Merijn de Jonge
2006-02-27 15:04 ` [Caml-list] " Julien Signoles
2006-02-27 15:13 ` [Caml-list] Writing Identity Functors (or Wrapper modules) inOCAML Sebastian Egner
2006-02-27 15:20 ` Merijn de Jonge
2006-02-27 15:06 ` Jean-Christophe Filliatre [this message]
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