From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <lpw25@cam.ac.uk>
X-Original-To: caml-list@sympa.inria.fr
Delivered-To: caml-list@sympa.inria.fr
Received: from mail2-relais-roc.national.inria.fr (mail2-relais-roc.national.inria.fr [192.134.164.83])
	by sympa.inria.fr (Postfix) with ESMTPS id CB4A77F726
	for <caml-list@sympa.inria.fr>; Mon,  5 May 2014 01:34:27 +0200 (CEST)
Received-SPF: None (mail2-smtp-roc.national.inria.fr: no sender
  authenticity information available from domain of
  lpw25@cam.ac.uk) identity=pra; client-ip=131.111.8.141;
  receiver=mail2-smtp-roc.national.inria.fr;
  envelope-from="lpw25@cam.ac.uk"; x-sender="lpw25@cam.ac.uk";
  x-conformance=sidf_compatible
Received-SPF: None (mail2-smtp-roc.national.inria.fr: no sender
  authenticity information available from domain of
  lpw25@cam.ac.uk) identity=mailfrom; client-ip=131.111.8.141;
  receiver=mail2-smtp-roc.national.inria.fr;
  envelope-from="lpw25@cam.ac.uk"; x-sender="lpw25@cam.ac.uk";
  x-conformance=sidf_compatible
Received-SPF: None (mail2-smtp-roc.national.inria.fr: no sender
  authenticity information available from domain of
  postmaster@ppsw-41.csi.cam.ac.uk) identity=helo;
  client-ip=131.111.8.141;
  receiver=mail2-smtp-roc.national.inria.fr;
  envelope-from="lpw25@cam.ac.uk";
  x-sender="postmaster@ppsw-41.csi.cam.ac.uk";
  x-conformance=sidf_compatible
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: AtEBAEDOZlODbwiNf2dsb2JhbABYg1WrDAEBAQaZTT2BEhYOAQELCwoIFCiCJQEBBAE6PwULCyElDwEESYhMCAQJxB2FbRMEhVaIfAeEPwSZNJYp
X-IPAS-Result: AtEBAEDOZlODbwiNf2dsb2JhbABYg1WrDAEBAQaZTT2BEhYOAQELCwoIFCiCJQEBBAE6PwULCyElDwEESYhMCAQJxB2FbRMEhVaIfAeEPwSZNJYp
X-IronPort-AV: E=Sophos;i="4.97,984,1389740400"; 
   d="scan'208";a="72051462"
Received: from ppsw-41.csi.cam.ac.uk ([131.111.8.141])
  by mail2-smtp-roc.national.inria.fr with ESMTP/TLS/DHE-RSA-AES256-SHA; 05 May 2014 01:34:27 +0200
X-Cam-AntiVirus: no malware found
X-Cam-ScannerInfo: http://www.cam.ac.uk/cs/email/scanner/
Received: from host81-153-161-113.range81-153.btcentralplus.com ([81.153.161.113]:41260 helo=study.localdomain)
	by ppsw-41.csi.cam.ac.uk (smtp.hermes.cam.ac.uk [131.111.8.157]:587)
	with esmtpsa (PLAIN:lpw25) (TLSv1.2:DHE-RSA-AES128-SHA:128)
	id 1Wh5vO-0002FE-S5 (Exim 4.82_3-c0e5623)
	(return-path <lpw25@cam.ac.uk>); Mon, 05 May 2014 00:34:26 +0100
From: Leo White <lpw25@cam.ac.uk>
To: Goswin von Brederlow <goswin-v-b@web.de>
Cc: caml-list@inria.fr
References: <5356225B.1090305@cryptosense.com>
	<CANhEzE5r_AL8mG968ANHS6aTbxnHKru2B596rs6KyAY-ufs1hw@mail.gmail.com>
	<20140424142837.GA3845@frosties>
X-Face: "XWxb[u_Z\PA_Y?9@|IA!!+jTb(/290-*ea/Un$I0B98.$n%eL.;2w<l)q>*,z]WR#T:,p[
 NBd++M7l]#7zj7!{<NUTKJA{}Ox<uO[wb-s<\6jzp.r]-AE[W%E+ckCQ'2WZS@Zu/PJU$~~oy|>~iw
 $W-"/=|dVjhT[D{4~gE}gK<2`.6fs!;uqqud]vs2N/3^m7{aS1V,
Date: Mon, 05 May 2014 00:46:25 +0100
In-Reply-To: <20140424142837.GA3845@frosties> (Goswin von Brederlow's message
	of "Thu, 24 Apr 2014 16:28:37 +0200")
Message-ID: <87ppjtumy6.fsf@study.localdomain>
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.4 (gnu/linux)
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Subject: Re: [Caml-list] Obj.magic for polymorphic identifiers

> Now that is a good reason to have open types. I've tried (and failed)
> to do something like this without resorting to magic and the only way
> I found was to declare a big GADT that has a constructor for every
> possible type and match all possible equal pairs. That realy doesn't
> scale well.
>
>
> Would it be possible for someone familiar with the patch to create a
> pull request for it on git? Maybe that way it could be merged in
> faster.
>
> MfG
> 	Goswin

As it happens they have just been merged:

https://github.com/ocaml/ocaml/commit/b56dc4b3df8d022b54f40682a9d5d4168c690413

Regards,

Leo