From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <martindemello@gmail.com>
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 15CA97EE49
	for <caml-list@sympa.inria.fr>; Mon, 16 Sep 2013 23:09:48 +0200 (CEST)
Received-SPF: None (mail2-smtp-roc.national.inria.fr: no sender
  authenticity information available from domain of
  martindemello@gmail.com) identity=pra;
  client-ip=209.85.128.177;
  receiver=mail2-smtp-roc.national.inria.fr;
  envelope-from="martindemello@gmail.com";
  x-sender="martindemello@gmail.com";
  x-conformance=sidf_compatible
Received-SPF: Pass (mail2-smtp-roc.national.inria.fr: domain of
  martindemello@gmail.com designates 209.85.128.177 as
  permitted sender) identity=mailfrom;
  client-ip=209.85.128.177;
  receiver=mail2-smtp-roc.national.inria.fr;
  envelope-from="martindemello@gmail.com";
  x-sender="martindemello@gmail.com";
  x-conformance=sidf_compatible; x-record-type="v=spf1"
Received-SPF: None (mail2-smtp-roc.national.inria.fr: no sender
  authenticity information available from domain of
  postmaster@mail-ve0-f177.google.com) identity=helo;
  client-ip=209.85.128.177;
  receiver=mail2-smtp-roc.national.inria.fr;
  envelope-from="martindemello@gmail.com";
  x-sender="postmaster@mail-ve0-f177.google.com";
  x-conformance=sidf_compatible
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: ApcBAMVyN1LRVYCxm2dsb2JhbABagz9SwQOBGggWDgEBAQEBBgsLCRQogiUBAQVAARsdAQMMBgULDS4iAREBBQEcBhMIh2gBAw8MnDSMUYMHhC0KGScNFU+IUQEBBAyPZweEHgOJOI5DkAsYKYRsHA
X-IPAS-Result: ApcBAMVyN1LRVYCxm2dsb2JhbABagz9SwQOBGggWDgEBAQEBBgsLCRQogiUBAQVAARsdAQMMBgULDS4iAREBBQEcBhMIh2gBAw8MnDSMUYMHhC0KGScNFU+IUQEBBAyPZweEHgOJOI5DkAsYKYRsHA
X-IronPort-AV: E=Sophos;i="4.90,918,1371074400"; 
   d="scan'208";a="33118402"
Received: from mail-ve0-f177.google.com ([209.85.128.177])
  by mail2-smtp-roc.national.inria.fr with ESMTP/TLS/RC4-SHA; 16 Sep 2013 23:09:46 +0200
Received: by mail-ve0-f177.google.com with SMTP id db12so3410703veb.22
        for <caml-list@inria.fr>; Mon, 16 Sep 2013 14:09:46 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=20120113;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :cc:content-type;
        bh=vKZVtruD3KRykJlge6Qf2USMNWGShcNgaThtOhnzNeg=;
        b=fHz6Xfl88mLGmULwHP+zKFhG/NybuZabFhqoACLXYspgqt2vZ5OJoE+sulUIzZgOe+
         HGQgBBof/ZenOp3mWwXcNHeVKNHIAW9SRq5ok3lzGDgUBsvZETAisq4D90c3Z4wJpv4y
         +Z16i1LK1cb1YoHDXMZtV0CkvcjvqwxR/j9FRKWqXzVWN7QFjJT6S2L3juL9Wg9FUxfB
         gWcUaJgPJwkqwVlhgCDhMppyg0o/+AM5gcxpZqLlHlB3MZxf/0dVXzsVMAKkhwh9c+V4
         0RG2kk74g0MnzqeoHxKeL1RrmTjpv2OHIBi35cWCOcQN4ghDO4nUQEuEBLEJ3u6PVn0y
         GbSQ==
MIME-Version: 1.0
X-Received: by 10.220.43.19 with SMTP id u19mr28677426vce.3.1379365786463;
 Mon, 16 Sep 2013 14:09:46 -0700 (PDT)
Received: by 10.220.162.197 with HTTP; Mon, 16 Sep 2013 14:09:46 -0700 (PDT)
In-Reply-To: <20130916074218.GB9309@frosties>
References: <CAFrFfuHwyDw1u41bnWnZNzUATRn+5inB1h8udW09sDVH134Wjg@mail.gmail.com>
	<87txhlbdna.fsf@golf.niidar.ru>
	<CAFrFfuGg3n4m5AU1QtE6GahMgdfADfP6ohbrxd5zpM8ju-g97w@mail.gmail.com>
	<20130916074218.GB9309@frosties>
Date: Mon, 16 Sep 2013 14:09:46 -0700
Message-ID: <CAFrFfuEmVFq5CNECc_fW4tQupGSyfyoLHd7hShLYVeinbkLRjQ@mail.gmail.com>
From: Martin DeMello <martindemello@gmail.com>
To: Goswin von Brederlow <goswin-v-b@web.de>
Cc: "caml-list@inria.fr" <caml-list@inria.fr>
Content-Type: text/plain; charset=ISO-8859-1
Subject: Re: [Caml-list] "subclassing" a char map

On Mon, Sep 16, 2013 at 12:42 AM, Goswin von Brederlow
<goswin-v-b@web.de> wrote:
>
> I recommend using a private type (in the module type) over an abstract
> one:
>     type t = private char
>
> That way a type t instance can only be constructed in the module,
> where you check the upper case, but can be used in place of a char
> otherwise. No need to manually project it everywhere.

Thanks, didn't know about that feature at all. After a bit of googling
I found https://ocaml.janestreet.com/?q=node/77, which is a nice write
up on the subject.

martin