220 11082 <3551362.sJEmF1TLfV@drako> article Path: news.gmane.org!not-for-mail From: Ivan =?utf-8?B?xIx1a2nEhw==?= 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 10:09:24 +0200 Organization: MISANU Lines: 42 Approved: news@gmane.org Message-ID: <3551362.sJEmF1TLfV@drako> References: <94ded66f-1c50-47b9-8a04-b83805443da9@isocpp.org> <2524692.K0qNjsgtn9@drako> <538777A8.4050706@hyc.io> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 X-Trace: ger.gmane.org 1401955778 19675 80.91.229.3 (5 Jun 2014 08:09:38 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 5 Jun 2014 08:09:38 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBD6M5NX6WAFRBN6LYCOAKGQE7D4YJDA@isocpp.org Thu Jun 05 10:09:31 2014 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-wg0-f70.google.com ([74.125.82.70]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1WsSjo-0007g4-Gk for gclcip-std-proposals@m.gmane.org; Thu, 05 Jun 2014 10:09:28 +0200 Original-Received: by mail-wg0-f70.google.com with SMTP id l18sf553678wgh.1 for ; Thu, 05 Jun 2014 01:09:28 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:sender:from:to:subject:date:message-id :organization:user-agent:in-reply-to:references:mime-version :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; bh=ZucuWjCZ8WFMXfcuNCMBmtWl0v05IfF5NHhhIxii9N0=; b=Q2wAmGMrDbL88HrNSUlVhepBB/QvufqbkV7XT3Q7nxoIxBjZzHEKrXBEFM7YHonOG/ LDmr+H18zps/uaRanAwFJs/zSpXO5R6B0crk/U/RGsHCHwjg8sSXReLWMWiYpCIiGzGj ejpktczJ1v5n9IhylRIF22xKrxh5W/lL8J/bQr5uhsGshNYNsOsiZnrc7Fb0VOz+bpoW BymAzgVmjrVloUhOTYFrfCrccvQtykyKSqH2GVN/DWcbYt1pK909cv6fbGW5APJnMB9L CyIx6jZbpNJuigQhf8RLpWpZQlD5tLCFM0s53aXKGLlK6uJ7Fmb/jxo/QT74h5aUQu5u s9cw== X-Gm-Message-State: ALoCoQn5y8cB/6GrxstBGdEbbcg18f7JS9T5B7r//Q5uQgQWXbUqD+ZU4myHgE8h3vx1/Md9CeAJ X-Received: by 10.112.14.5 with SMTP id l5mr6324974lbc.6.1401955768032; Thu, 05 Jun 2014 01:09:28 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.180.73.80 with SMTP id j16ls47439wiv.13.gmail; Thu, 05 Jun 2014 01:09:26 -0700 (PDT) X-Received: by 10.180.187.111 with SMTP id fr15mr13085487wic.57.1401955766899; Thu, 05 Jun 2014 01:09:26 -0700 (PDT) Original-Received: from mail-wi0-x234.google.com (mail-wi0-x234.google.com [2a00:1450:400c:c05::234]) by mx.google.com with ESMTPS id v8si9885097wjx.47.2014.06.05.01.09.26 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 05 Jun 2014 01:09:26 -0700 (PDT) Received-SPF: pass (google.com: domain of ivan.cukic@gmail.com designates 2a00:1450:400c:c05::234 as permitted sender) client-ip=2a00:1450:400c:c05::234; Original-Received: by mail-wi0-f180.google.com with SMTP id hi2so2909257wib.7 for ; Thu, 05 Jun 2014 01:09:26 -0700 (PDT) X-Received: by 10.194.80.161 with SMTP id s1mr33181360wjx.47.1401955766670; Thu, 05 Jun 2014 01:09:26 -0700 (PDT) Original-Received: from drako.localnet (cable-178-148-120-90.dynamic.sbb.rs. [178.148.120.90]) by mx.google.com with ESMTPSA id 18sm7005801wju.15.2014.06.05.01.09.25 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 05 Jun 2014 01:09:26 -0700 (PDT) Original-Sender: =?UTF-8?B?SXZhbiDEjHVracSH?= User-Agent: KMail/4.13.2 (Linux/3.14-1-amd64; KDE/4.13.1; x86_64; git-d40ac91; 2014-06-04) In-Reply-To: <538777A8.4050706@hyc.io> X-Original-Sender: ivan.cukic@gmail.com X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of ivan.cukic@gmail.com designates 2a00:1450:400c:c05::234 as permitted sender) smtp.mail=ivan.cukic@gmail.com; dkim=pass header.i=@gmail.com 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:11082 Archived-At: > 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::optional would suffice. > Exception are only a kind of "typed error" and I'd advise to use a > custom error structure (with virtual methods) over exceptions since we I agree. > > Yes, saw that. That is one of the things I'd put in a separate proposal - > > I'm guessing it will receive more resistance than just the expected<...> > > template. > I'm totally agree with you, this has little to do in the expected > proposal. We put it in because we wanted people to see aesthetic ways of > manipulating expected and monads in general. Superb. :) Cheers, Ivan -- Money can't buy happiness, but neither can poverty. -- Leo Rosten -- --- You received this message because you are subscribed to the Google Groups "ISO C++ Standard - Future Proposals" group. 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