220 20695 <2081160.jZretSXBOl@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: Tue, 22 Sep 2015 23:11:33 -0700 Lines: 35 Approved: news@gmane.org Message-ID: <2081160.jZretSXBOl@tjmaciei-mobl4> References: <4c3e2ee7-2159-4e93-a439-7d5c94c38c9c@isocpp.org> 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 1442988708 24076 80.91.229.3 (23 Sep 2015 06:11:48 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 23 Sep 2015 06:11:48 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCB4TK757YBRBGEFRGYAKGQEMB3SAIA@isocpp.org Wed Sep 23 08:11:40 2015 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-la0-f69.google.com ([209.85.215.69]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZedHG-0003aZ-9f for gclcip-std-proposals@m.gmane.org; Wed, 23 Sep 2015 08:11:38 +0200 Original-Received: by lagj9 with SMTP id j9sf17775166lag.0 for ; Tue, 22 Sep 2015 23:11:37 -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=y7jFg1ZDfNOJzsq+7IWMJiY+6uN+0p8J0rzdcFkaSow=; b=V3ioTim/pDr5Cl1WzEWHhoy134LhiSi2A61v+Wa2h3bwgo+gpWnCpPDPMQSohmBBBy l+mcI+vMFrQw1/ZP1RcFyJSwgdf/iiC/l23k6V7jX6j1NMah15CbeOdflLX1rTeQ3AkE 6gm+GoZSw8+jNAl30KLt9EUcgcuPRgD3/MgMTirRUxuD7SG995dcK60Q3Voxc97b3BCd dzYEovvKqxIf+k6qYqoBOR6Sw8s8FfhF7RN1GZSL9NxIqZev6qHW8/4cjQhng3N00spY 9Te3l/TT6fzaN3Z2FjfeL4Dhq2JLh4B+8pfsTnZb4lEQhtBuizjYHdFz5udJ7dVPMMok 4o8A= X-Gm-Message-State: ALoCoQk9NYDKyyhfjWIq0ek0WaLe+nY+X+OwcyAAxNKFp4AfRNyWvDQ/lRGYaP3qqfa/5aVKVIdz X-Received: by 10.112.125.104 with SMTP id mp8mr4960558lbb.20.1442988697369; Tue, 22 Sep 2015 23:11:37 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.180.96.163 with SMTP id dt3ls1052936wib.42.canary; Tue, 22 Sep 2015 23:11:36 -0700 (PDT) X-Received: by 10.180.8.101 with SMTP id q5mr1930035wia.16.1442988696384; Tue, 22 Sep 2015 23:11:36 -0700 (PDT) Original-Received: from gondolin.macieira.info (gondolin.macieira.info. [78.47.120.188]) by mx.google.com with ESMTP id fl6si29684827wib.15.2015.09.22.23.11.36 for ; Tue, 22 Sep 2015 23:11:36 -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:e16a:f933:34c6:6d]) by gondolin.macieira.info (Postfix) with ESMTPSA id 7209811B4A6 for ; Tue, 22 Sep 2015 23:11:35 -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:20695 Archived-At: On Tuesday 22 September 2015 17:34:20 joewoodbury@gmail.com wrote: > strLen is passed into a function along with pStr. After nullptr checks, the > following is done: > > size_t tmpStrLen = wcslen(pStr); > if (strLen > tmpStrLen) > strLen = tmpStrLen; > > Using the ?: operator, you could do: > > strLen = wcslen(pStr) < strLen ?: strLen; > > Again, a trivial example, but one in actual code. This does not do the same as the above. It does: bool tmp = wcslen(pStr) < strLen; strLen = tmp ? tmp : strLen; That is, it assigns 1 to strLen if the conditional was true. -- 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/. .