From: Jeremy Yallop <yallop@gmail.com>
To: Maxence Guesdon <Maxence.Guesdon@inria.fr>
Cc: Caml List <caml-list@inria.fr>
Subject: Re: [Caml-list] mixing GADTs and first class modules
Date: Wed, 18 Mar 2015 10:24:34 +0000 [thread overview]
Message-ID: <CAAxsn=G1BYLcQs9R9zNnTUk6fXCEMsHeWGNB+AmhQQXCxFg-CQ@mail.gmail.com> (raw)
In-Reply-To: <20150318111918.1a97f7d4@alcazar2>
On 18 March 2015 at 10:19, Maxence Guesdon <Maxence.Guesdon@inria.fr> wrote:
> module type M = sig type t end;;
> type _ foo = T : (module M) -> M.t foo;;
>
> but it does not seem so, as I can't refer to type t of the module
> parameter:
> Error: Unbound type constructor M.t
>
> Is there a workaround ?
Yes:
type _ foo = T : (module M with type t = 'a) -> 'a foo
next prev parent reply other threads:[~2015-03-18 10:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-18 10:19 Maxence Guesdon
2015-03-18 10:24 ` Jeremy Yallop [this message]
2015-03-18 10:28 ` Maxence Guesdon
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