220 11083 <539034DD.3080804@hyc.io> article Path: news.gmane.org!not-for-mail From: Pierre Talbot Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: N4015: A proposal to add a utility class to represent expected monad Date: Thu, 05 Jun 2014 11:14:05 +0200 Lines: 32 Approved: news@gmane.org Message-ID: <539034DD.3080804@hyc.io> References: <94ded66f-1c50-47b9-8a04-b83805443da9@isocpp.org> <2524692.K0qNjsgtn9@drako> <538777A8.4050706@hyc.io> <3551362.sJEmF1TLfV@drako> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1401959655 595 80.91.229.3 (5 Jun 2014 09:14:15 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 5 Jun 2014 09:14:15 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBDH7J5FDT4ERBX7JYCOAKGQEA5DJ2TY@isocpp.org Thu Jun 05 11:14:09 2014 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-lb0-f197.google.com ([209.85.217.197]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1WsTkO-0002eT-9j for gclcip-std-proposals@m.gmane.org; Thu, 05 Jun 2014 11:14:08 +0200 Original-Received: by mail-lb0-f197.google.com with SMTP id w7sf630313lbi.0 for ; Thu, 05 Jun 2014 02:14:08 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:message-id:date:from:user-agent:mime-version:to :subject:references:in-reply-to:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:list-post:list-help:list-archive:list-subscribe :list-unsubscribe:content-type:content-transfer-encoding; bh=q33+3WYcTtPbMr9cF4Thr5HBs/jpBLDdPI4I1BkIVLs=; b=lmc80nA+0qqwn+sfxJitHhopF8Q3LFilPbfJCenDbEGu2Q4WjGEz6VIlIfSwQy/Dct gZyhyqk2XP3TLgxJKX46cl9dcSn14pJMa6D8Nezk3+GJd2ollGFwqzvbOBcbJ3eoodmw ZFKbm8vV8r1etYGSP/FU2Con2GYneo+DbMC7pOjeb4yCloYkpQ1YWzXhVrGuLYsYE3Ee met8OE81u8/Dreyxk26q7X70ChwK7V4azHbjyIr5VY5b48PmQkdHBUXZcDw4Yj69HgUz QhwDL+UhfIEUuYqJPc44y4C0beiZAtkzi2jCFgheeQfvPWAKgIowJVq5k1AD/lY5566D NjB X-Gm-Message-State: ALoCoQlMyZd4bBDlK3FIxUU5yu3j7QzUk+rmcvQ8nz9hExpXY8B4O9+w9J5vUIjJ3Ba2sZXXLI8A X-Received: by 10.112.73.232 with SMTP id o8mr6499917lbv.0.1401959648126; Thu, 05 Jun 2014 02:14:08 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.180.86.98 with SMTP id o2ls57970wiz.46.gmail; Thu, 05 Jun 2014 02:14:07 -0700 (PDT) X-Received: by 10.194.91.228 with SMTP id ch4mr9505458wjb.59.1401959647235; Thu, 05 Jun 2014 02:14:07 -0700 (PDT) Original-Received: from xvm-161-161.ghst.net ([2001:4b98:dc0:47:216:3eff:fe48:3630]) by mx.google.com with ESMTPS id z15si40100873wia.47.2014.06.05.02.14.06 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Thu, 05 Jun 2014 02:14:06 -0700 (PDT) Received-SPF: none (google.com: ptalbot@hyc.io does not designate permitted sender hosts) client-ip=2001:4b98:dc0:47:216:3eff:fe48:3630; Original-Received: from mac-nomade-68.ircam.fr (mac-nomade-68.ircam.fr [129.102.65.68]) (using TLSv1 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by xvm-161-161.ghst.net (Postfix) with ESMTPSA id 4058F2C0DA for ; Thu, 5 Jun 2014 11:14:05 +0200 (CEST) User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 In-Reply-To: <3551362.sJEmF1TLfV@drako> X-Original-Sender: ptalbot@hyc.io X-Original-Authentication-Results: mx.google.com; spf=neutral (google.com: ptalbot@hyc.io does not designate permitted sender hosts) smtp.mail=ptalbot@hyc.io Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Google-Group-Id: 399137483710 List-Post: , List-Help: , List-Archive: List-Subscribe: , List-Unsubscribe: , Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:11083 Archived-At: Le 05/06/2014 10:09, Ivan =C4=8Cuki=C4=87 a =C3=A9crit : >> IMHO, typed errors are only useful when there is contextual information >> to report along with the error. Otherwise integer error codes do the job >> well. > As I said, it could start a war. > > One might argue that if you don't need contextual information, you don't = need > any contextual information - the error id, and that using only std::optio= nal > would suffice. It doesn't look like a war to me, we're just trying to categorize the=20 usages of error reporting :-) So indeed, the error id is a *static* contextual information, so=20 *dynamic* contextual information would include runtime information. BTW,=20 this is something we could add in the introduction of the proposal. Thanks for comments, Pierre --=20 ---=20 You received this message because you are subscribed to the Google Groups "= ISO C++ Standard - Future Proposals" group. To unsubscribe from this group and stop receiving emails from it, send an e= mail to std-proposals+unsubscribe@isocpp.org. To post to this group, send email to std-proposals@isocpp.org. Visit this group at http://groups.google.com/a/isocpp.org/group/std-proposa= ls/. .