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d="scan'208";a="216144306" Received: from mout.web.de ([212.227.17.12]) by mail2-smtp-roc.national.inria.fr with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Apr 2016 09:26:02 +0200 Received: from frosties.localnet ([134.3.242.84]) by smtp.web.de (mrweb102) with ESMTPSA (Nemesis) id 0Lrb3x-1bgb1u3ftF-013Pfr; Thu, 28 Apr 2016 09:25:59 +0200 Received: from mrvn by frosties.localnet with local (Exim 4.87) (envelope-from ) id 1avgKk-0002oZ-P8; Thu, 28 Apr 2016 09:25:58 +0200 Date: Thu, 28 Apr 2016 09:25:58 +0200 From: Goswin von Brederlow To: Jacques-Henri Jourdan Cc: caml-list@inria.fr Message-ID: <20160428072558.GA10554@frosties> References: <572084CC.1080408@libertysurf.fr> <32C540F73D89478D9E6D2AF2599F639F@erratique.ch> <572089B8.8090207@normalesup.org> <4DF7CBF37BD9480C9F9EC992D51D254C@erratique.ch> <57208EA3.6030801@normalesup.org> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <57208EA3.6030801@normalesup.org> User-Agent: Mutt/1.5.23 (2014-03-12) X-Provags-ID: V03:K0:5hLKe2/lFCHbTKOQHiogfNxIrK4Vew2E4uOtFSSkSgtIZTpQ+Zc Qpp76ByuWBLaU6V2NHZrWDt+j9DIWR/5DuiBm8zf76VW4NTqd6gGIuB0WJKQwd6NDCWtm1V EKKsMnGNjVKtrk11edH5o8Iraf//WpCT+o2PwE9yZUs9+ZhFzmcEl6kpJ8m3IUisHMIBK5q tkkI3He5p9CRBLS631V7A== X-UI-Out-Filterresults: notjunk:1;V01:K0:z+SPMDeWDPc=:9kjHmCAFLCUVQmhOy2WjsC /dg9ciOm6hNmY0nUpQ53EmJXDdo9gM29weEBZs8AbXjgrdObhLeZPnHeny8lQIz7t7s+5pMK+ q99djCSCDLiKEqH4G0XERriXBq1Xmje6bQ/Eijc6m7szE0utYnJ662PZ2bQSaL92wbVzPGmeq 1jHpxn/CcApre6avPR/87ME0zjdRKt+RwAr9+VWYR9F4uofDZjIAthwxvhaSA3w19tq6Su0hH 0rXKrZsj7o9LmKOh0jRBW0mpLNOa6N2HHHIZJtTtbaEx3p3U7RICKkf718ADJZIKeUx+VwkGw sq2asz293dam1waCf43Ps1SN8/+On8Uj/jfohmVRSU4A73HnV7qbfF3OXRXYNdBzfYOlno4jj ZbDuzsGmVjDtJbOLsip2z3j77E8j0nWwaUwhnLIJS26B7BabdgczIZa+lRC/3qjm6j3MpqDkQ ALZ3ss6WNt14S7ZskJqbxOLhIiOoE6ETMcoH06Eot3nU2xugXqnkq8rfL9B8daso7MqemkZLm +m9DEw/LgosheI2ToRA3VHWI4IAYg0sHq35IiFioiEj0CkW81vZH72vr6ZDwH9tQWZWSOb5xK mPgRIDgrFaGTfZcx0FdkplAHV82RCC4YoA+8wHA2BVA9kWQNB/lrn4HMU6DyEjp08zRm34LJz n7/2sdlVsBZKSR9b+KwdxLd/Cn4oVqcTyhnT4Itw8wlwG4at44R4JlEbozp7DxD07dHF4HXhN 5edrfHGSBJXpvTvvik4Px2wmfJe3lbfnArHUDXn0yd3U56++Uu16WzSuHts= Subject: Re: [Caml-list] ocaml 4.03 and warning 52 : argument of this constructor should not be matched against a constant pattern On Wed, Apr 27, 2016 at 12:04:19PM +0200, Jacques-Henri Jourdan wrote: > I think it has been introduced in 4.02. > > On 04/27/2016 12:00 PM, Daniel Bünzli wrote: > > Le mercredi, 27 avril 2016 à 11:43, Jacques-Henri Jourdan a écrit : > >> Or, with the new pattern matching with exception syntax : > >> > >> match List.hd lst with > >> | exception Failure _ -> Printf.printf "empty list\n" > >> | hd -> ... > > When was that introduced again ? I'm now starting to move to 4.01 language-wise. > > > > Daniel That's rarther stupid in this case. Why create and catch an exception when you can just match the list directly? match lst with | [] -> Printf.printf "empty list\n" | hd::_ -> ... MfG Goswin