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From: "Frédéric Bour" <defree@gmail.com>
To: danny.gratzer@gmail.com
Cc: yrg@irif.fr, caml-list@inria.fr
Subject: Re: [Caml-list] include two module implementations sharing the same type definitions
Date: Thu, 29 Nov 2018 10:08:08 +0100	[thread overview]
Message-ID: <CAMp_u=dH5t9JD=rq7o0ui2AzksJMATe9NvaBRyxK+zMQD-vrUA@mail.gmail.com> (raw)
In-Reply-To: <CACbeAXDR2KMzyZY-SPowqyLMSAeK_Vc8T5Y-ZAhemUiEC1Fmaw@mail.gmail.com>

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1) In all generality,

  include (BI : module type of struct include BI end with type t := t)

will work if you haven't defined `module type B` or if `BI` exports other
types (say u) and you need to preserve equalities (BI.u = B.u).

2) Changes have been made to the module system in the trunk version of
OCaml. The original code should be accepted without any change.

On Thu, Nov 29, 2018 at 10:03 AM Danny Gratzer <danny.gratzer@gmail.com>
wrote:

> Hello,
>
> Perhaps I'm overlooking something but replacing
>
>     include BI
>
> with
>
>     include (BI : B with type t := t)
>
> seems like a reasonable fix to me.
>
> Danny
>

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  parent reply	other threads:[~2018-11-29  9:08 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-29  8:52 Yann Régis-Gianas
2018-11-29  9:02 ` Danny Gratzer
2018-11-29  9:07   ` Yann Régis-Gianas
2018-11-29  9:08   ` Frédéric Bour [this message]
2018-11-29  9:12     ` Yann Régis-Gianas

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