From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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=AWL autolearn=disabled version=3.1.3 Received: from mail3-relais-sop.national.inria.fr (mail3-relais-sop.national.inria.fr [192.134.164.104]) by yquem.inria.fr (Postfix) with ESMTP id 7EB19BBC1 for ; Fri, 11 Apr 2008 11:58:34 +0200 (CEST) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: ApcHALfS/kfUnw7XX2dsb2JhbACCO48KFwUCBR+aCQ X-IronPort-AV: E=Sophos;i="4.25,640,1199660400"; d="scan'208";a="11338590" Received: from fhw-relay07.plus.net ([212.159.14.215]) by mail3-smtp-sop.national.inria.fr with ESMTP; 11 Apr 2008 11:58:34 +0200 Received: from [80.229.56.224] (helo=beast.local) by fhw-relay07.plus.net with esmtp (Exim) id 1JkG1h-0002nc-Ed for caml-list@yquem.inria.fr; Fri, 11 Apr 2008 10:58:33 +0100 From: Jon Harrop Organization: Flying Frog Consultancy Ltd. To: caml-list@yquem.inria.fr Subject: Deconstructing optional arguments Date: Fri, 11 Apr 2008 10:24:16 +0100 User-Agent: KMail/1.9.7 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200804111024.16296.jon@ffconsultancy.com> X-Plusnet-Relay: da16aaf2799f7d622451b1d5092f18cf X-Spam: no; 0.00; frog:98 argument:02 argument:02 let:03 let:03 arguments:07 optional:09 optional:09 ltd:87 products:86 something:14 www:84 possible:17 com:74 com:74 Is it possible to deconstruct an optional argument as you can with a labeled argument: let f ~p:(x,y) () = x - y with something like: let f ?(p=0,0):(x,y) () = x - y -- Dr Jon D Harrop, Flying Frog Consultancy Ltd. http://www.ffconsultancy.com/products/?e