From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <skaller@users.sourceforge.net>
X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on yquem.inria.fr
X-Spam-Level: 
X-Spam-Status: No, score=0.0 required=5.0 tests=none autolearn=disabled 
	version=3.1.3
X-Original-To: caml-list@yquem.inria.fr
Delivered-To: caml-list@yquem.inria.fr
Received: from concorde.inria.fr (concorde.inria.fr [192.93.2.39])
	by yquem.inria.fr (Postfix) with ESMTP id 5B652BC6B
	for <caml-list@yquem.inria.fr>; Fri, 29 Jun 2007 20:29:33 +0200 (CEST)
Received: from ipmail03.adl2.internode.on.net (ipmail03.adl2.internode.on.net [203.16.214.135])
	by concorde.inria.fr (8.13.6/8.13.6) with ESMTP id l5TITV7j024102
	for <caml-list@inria.fr>; Fri, 29 Jun 2007 20:29:32 +0200
X-IronPort-AV: E=Sophos;i="4.16,476,1175437800"; 
   d="scan'208";a="109526069"
Received: from ppp59-167-2-129.lns1.syd7.internode.on.net (HELO [192.168.1.201]) ([59.167.2.129])
  by ipmail03.adl2.internode.on.net with ESMTP; 30 Jun 2007 03:59:30 +0930
Subject: Re: [Caml-list] let int = ?([' ' '\t'] '-') digits+
From: skaller <skaller@users.sourceforge.net>
To: Jon Harrop <jon@ffconsultancy.com>
Cc: Caml List <caml-list@inria.fr>
In-Reply-To: <200706291639.39529.jon@ffconsultancy.com>
References: <200706291639.39529.jon@ffconsultancy.com>
Content-Type: text/plain
Date: Sat, 30 Jun 2007 04:29:29 +1000
Message-Id: <1183141769.5305.22.camel@rosella.wigram>
Mime-Version: 1.0
X-Mailer: Evolution 2.10.1 
Content-Transfer-Encoding: 7bit
X-Miltered: at concorde with ID 46854F8B.000 by Joe's j-chkmail (http://j-chkmail . ensmp . fr)!
X-Spam: no; 0.00; 0100,:01 ocaml's:01 lexer:01 sourceforge:01 wrote:01 caml-list:01 int:01 let:03 fri:05 '-':07 break:08 mean:08 mean:08 rather:08 rather:08 

On Fri, 2007-06-29 at 16:39 +0100, Jon Harrop wrote:
> If OCaml's lexer handled numbers of this format, would it be possible to 
> write:
> 
>   f -1 -2
> 
> to mean:
> 
>   f (-1) (-2)
> 
> rather than:
> 
>   f - 1 - 2
> 
> Is this a good idea?

No, I don't think so, because

	-1

and

	- 1

would then be distinct, and there's be confusion with:

	x-1

which would actually mean

	x (-1)

rather than

	x - 1

That would break reams of code .. ;(

-- 
John Skaller <skaller at users dot sf dot net>
Felix, successor to C++: http://felix.sf.net