220 20724 <2149077.NQFMSFmPxb@tjmaciei-mobl4> article Path: news.gmane.org!not-for-mail From: Thiago Macieira Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Null -conditional and -coalescing operators Date: Wed, 23 Sep 2015 07:41:54 -0700 Lines: 31 Approved: news@gmane.org Message-ID: <2149077.NQFMSFmPxb@tjmaciei-mobl4> References: <4c3e2ee7-2159-4e93-a439-7d5c94c38c9c@isocpp.org> <2242837.lDbo80ytWE@tjmaciei-mobl4> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Trace: ger.gmane.org 1443019341 21206 80.91.229.3 (23 Sep 2015 14:42:21 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 23 Sep 2015 14:42:21 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCB4TK757YBRBOXURKYAKGQEP6PEGHA@isocpp.org Wed Sep 23 16:42:08 2015 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-wi0-f200.google.com ([209.85.212.200]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZelFG-0005kE-5t for gclcip-std-proposals@m.gmane.org; Wed, 23 Sep 2015 16:42:06 +0200 Original-Received: by wicgb1 with SMTP id gb1sf25593979wic.3 for ; Wed, 23 Sep 2015 07:42:05 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:subject:date:message-id:user-agent :in-reply-to:references:mime-version:content-type:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=+IMVvDfuzWuVobvmBn0h9VCRVy0RzFD7rwg5/bF3cHw=; b=mc/kwEpW6g3vQxQCr3mapWwYykzVS32BGZM/Bt/zQUOUqqvR/uk4CoWXh/hIxcg4es 4D/p3dTT78g6zkdDXUUMTX7ZLgcAP1J/9mmLM9GRsyQ6wT6kTnEJHZ3XF5EVsdiNcda9 yJCtnP/VexiheSHZIRceizC+TnNLpP6pfW5udOfQWnYMDINzOn4HNzg1XlajNlrEJGha a3vl1hUq2b/aoCniSlxZ39T2XigKwtgleK/VKBR+zjy1qhyoThkUAo37DIPdStoL0ARj TZFsgdwn6UHuxdHZSSUIHZH4HR8CACIfBipUt/72PwiCIt03HX+Tk5PLAQX5tteQtokM 3XOA= X-Gm-Message-State: ALoCoQlNf7NbOLy4IqdYEAfOQtsX+hTAzLrw3LvSo01odJp/+23zeyHEMBONU3G+8SFbGt2TJROP X-Received: by 10.180.12.170 with SMTP id z10mr673682wib.1.1443019325559; Wed, 23 Sep 2015 07:42:05 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.180.87.106 with SMTP id w10ls1114292wiz.53.canary; Wed, 23 Sep 2015 07:42:02 -0700 (PDT) X-Received: by 10.194.116.9 with SMTP id js9mr42303465wjb.51.1443019322174; Wed, 23 Sep 2015 07:42:02 -0700 (PDT) Original-Received: from gondolin.macieira.info (gondolin.macieira.info. [78.47.120.188]) by mx.google.com with ESMTP id bm2si10028602wjc.190.2015.09.23.07.42.01 for ; Wed, 23 Sep 2015 07:42:02 -0700 (PDT) Received-SPF: pass (google.com: domain of thiago@macieira.org designates 78.47.120.188 as permitted sender) client-ip=78.47.120.188; Original-Received: from tjmaciei-mobl4.localnet (unknown [IPv6:2601:1c0:5803:81c9:30ee:b4bb:abb2:c60a]) by gondolin.macieira.info (Postfix) with ESMTPSA id 8B46F11B53F for ; Wed, 23 Sep 2015 07:42:01 -0700 (PDT) User-Agent: KMail/4.14.9 (Linux/4.1.6-1-desktop; KDE/4.14.9; x86_64; ; ) In-Reply-To: X-Original-Sender: thiago@macieira.org X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of thiago@macieira.org designates 78.47.120.188 as permitted sender) smtp.mailfrom=thiago@macieira.org Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Spam-Checked-In-Group: std-proposals@isocpp.org 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:20724 Archived-At: On Wednesday 23 September 2015 10:31:02 Matthew Woehlke wrote: > > C code that returns error conditions, this is useful: > > ErrorCode err = some_function(); > > err = err ?: some_other_function(); > > err = err ?: some_third_function(); > > err || err = some_other_function(); > > :-) > > (I've actually written code like that. Pedantically, I think it was of > the form 'success && ...', but same idea...) Hmm... good idea. Ugly, but why not? Thanks for the suggestion. -- Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org Software Architect - Intel Open Source Technology Center PGP/GPG: 0x6EF45358; fingerprint: E067 918B B660 DBD1 105C 966C 33F5 F005 6EF4 5358 -- --- 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 email 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-proposals/. .