Received: from mail.proteosys.com ([213.139.130.197]) by nummer-3.proteosys with Microsoft SMTPSVC(6.0.3790.3959); Tue, 4 Nov 2008 05:44:14 +0100 Received: by mail.proteosys.com (8.13.8/8.13.8) with ESMTP id mA44i7ZX009397 for ; Tue, 4 Nov 2008 05:44:08 +0100 Received: from listserv.uni-heidelberg.de (listserv.uni-heidelberg.de [129.206.100.94]) by relay.uni-heidelberg.de (8.14.1/8.14.1) with ESMTP id mA43daKp007179 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 4 Nov 2008 04:39:36 +0100 Received: from listserv.uni-heidelberg.de (localhost.localdomain [127.0.0.1]) by listserv.uni-heidelberg.de (8.13.1/8.13.1) with ESMTP id mA3N1kpm001799; Tue, 4 Nov 2008 04:39:24 +0100 Received: by LISTSERV.UNI-HEIDELBERG.DE (LISTSERV-TCP/IP release 15.5) with spool id 93408 for LATEX-L@LISTSERV.UNI-HEIDELBERG.DE; Tue, 4 Nov 2008 04:39:23 +0100 Received: from listserv.uni-heidelberg.de (localhost.localdomain [127.0.0.1]) by listserv.uni-heidelberg.de (8.13.1/8.13.1) with ESMTP id mA3N1kpg001799 for ; Tue, 4 Nov 2008 04:39:23 +0100 Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by listserv.uni-heidelberg.de id mA43dNbc023322 Message-ID: Date: Tue, 4 Nov 2008 04:39:23 +0100 Reply-To: Mailing list for the LaTeX3 project Sender: Mailing list for the LaTeX3 project From: Joseph Wright Subject: Returning error codes To: LATEX-L@LISTSERV.UNI-HEIDELBERG.DE Precedence: list List-Help: , List-Unsubscribe: List-Subscribe: List-Owner: List-Archive: X-ProteoSys-SPAM-Score: -2.599 () BAYES_00 X-Scanned-By: MIMEDefang 2.64 on 213.139.130.197 Return-Path: owner-latex-l@LISTSERV.UNI-HEIDELBERG.DE X-OriginalArrivalTime: 04 Nov 2008 04:44:14.0453 (UTC) FILETIME=[FCF0C250:01C93E37] Status: R X-Status: X-Keywords: X-UID: 5414 Hello all, I'm looking at how I might write a generic number parser. I'm thinking of using a property list to return the number (in bits), but would like to be able to indicate an error (if one occurs). I was thinking of using a property "error code" for this, and wondered if some kind of standardised system might be useful. Anyone have any thoughts on this? -- Joseph Wright