From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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 49DA77EE35 for ; Thu, 7 Apr 2016 15:36:34 +0200 (CEST) IronPort-PHdr: 9a23:rIOwlhENtwfkTrCeyK4RoZ1GYnF86YWxBRYc798ds5kLTJ75r8ywAkXT6L1XgUPTWs2DsrQf27qQ7/urBDdIyK3CmU5BWaQEbwUCh8QSkl5oK+++Imq/EsTXaTcnFt9JTl5v8iLzG0FUHMHjew+a+SXqvnYsExnyfTB4Ov7yUtaLyZ/nh6buoNaOOE1hv3mUX/BbFF2OtwLft80b08NJC50a7V/3mEZOYPlc3mhyJFiezF7W78a0+4N/oWwL46pyv+YJa6jxfrw5QLpEF3xmdjltvIy4/SXEGCyk734YGkEXiQYAVwPM6RW/WpbqrgP7sPB80W+UJ5ulY6ozXGGO5qFqRRvforMBJTo4uDXbg8pxgaYdqg+soQ57wqbZepucKPtnY66bdtNMFjkJZdpYSyEUWtD0VIAIFedUeL8A94Q= Authentication-Results: mail2-smtp-roc.national.inria.fr; spf=None smtp.pra=daniel.buenzli@erratique.ch; spf=None smtp.mailfrom=daniel.buenzli@erratique.ch; spf=None smtp.helo=postmaster@smtp.webfaction.com Received-SPF: None (mail2-smtp-roc.national.inria.fr: no sender authenticity information available from domain of daniel.buenzli@erratique.ch) identity=pra; client-ip=74.55.86.74; receiver=mail2-smtp-roc.national.inria.fr; envelope-from="daniel.buenzli@erratique.ch"; x-sender="daniel.buenzli@erratique.ch"; x-conformance=sidf_compatible Received-SPF: None (mail2-smtp-roc.national.inria.fr: no sender authenticity information available from domain of daniel.buenzli@erratique.ch) identity=mailfrom; client-ip=74.55.86.74; receiver=mail2-smtp-roc.national.inria.fr; envelope-from="daniel.buenzli@erratique.ch"; x-sender="daniel.buenzli@erratique.ch"; x-conformance=sidf_compatible Received-SPF: None (mail2-smtp-roc.national.inria.fr: no sender authenticity information available from domain of postmaster@smtp.webfaction.com) identity=helo; client-ip=74.55.86.74; receiver=mail2-smtp-roc.national.inria.fr; envelope-from="daniel.buenzli@erratique.ch"; x-sender="postmaster@smtp.webfaction.com"; x-conformance=sidf_compatible X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: A0DZAQBZYQZXk0pWN0pdhA2pG5JBgXOICxIBAQEBAQEBAREBAQEBBw0JCSEvQQyBYII+BIEHAiYCSRYbiB8En0OPXZIbfJEvK4IrBZgEgS2OMAGHWQ6FVY8kJweBagsBAQFRgVSHfoFfAQEB X-IPAS-Result: A0DZAQBZYQZXk0pWN0pdhA2pG5JBgXOICxIBAQEBAQEBAREBAQEBBw0JCSEvQQyBYII+BIEHAiYCSRYbiB8En0OPXZIbfJEvK4IrBZgEgS2OMAGHWQ6FVY8kJweBagsBAQFRgVSHfoFfAQEB X-IronPort-AV: E=Sophos;i="5.24,449,1454972400"; d="scan'208";a="212741380" Received: from mail6.webfaction.com (HELO smtp.webfaction.com) ([74.55.86.74]) by mail2-smtp-roc.national.inria.fr with ESMTP/TLS/DHE-RSA-AES256-SHA; 07 Apr 2016 15:36:33 +0200 Received: from [172.20.10.2] (54.237.197.178.dynamic.wless.lssmb00p-cgnat.res.cust.swisscom.ch [178.197.237.54]) by smtp.webfaction.com (Postfix) with ESMTP id C30B120E3D2A for ; Thu, 7 Apr 2016 13:36:30 +0000 (UTC) Date: Thu, 7 Apr 2016 15:36:28 +0200 From: =?utf-8?Q?Daniel_B=C3=BCnzli?= To: OCaml List Message-ID: <91DFDE4DE82E4A8B983A7822E695BBA4@erratique.ch> X-Mailer: sparrow 1.6.4 (build 1178) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Subject: [Caml-list] Suboptimal pattern matching specification Hello,=20=20=20 Something I run quite often is the following pattern matching=20=20 match v with | None | Some c when sat c -> expr | Some =E2=80=A6=20=20 which doesn't compile and forces me to write=20=20 match v with=20=20 | None -> expr=20=20 | Some c when sat c -> expr | Some =E2=80=A6=20=20 and leads to code duplication or the introduction of a definition to avoid = it.=20=20 Am I missing a syntax bit ?=20=20 Best, Daniel