220 35116 <1931282.giciDSTxGt@tjmaciei-mobl1> article Path: news.gmane.org!.POSTED!not-for-mail From: Thiago Macieira Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Marking more std::string_view members noexcept Date: Thu, 26 Oct 2017 09:09:32 -0700 Lines: 23 Approved: news@gmane.org Message-ID: <1931282.giciDSTxGt@tjmaciei-mobl1> References: <3d03cd7d-2177-98fd-408d-f74b1f6a8552@gmail.com> <3446274.dRsjijLxpX@tjmaciei-mobl1> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" X-Trace: blaine.gmane.org 1509034196 25378 195.159.176.226 (26 Oct 2017 16:09:56 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 26 Oct 2017 16:09:56 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCB4TK757YBRBQERZDHQKGQE3YP6SOQ@isocpp.org Thu Oct 26 18:09:49 2017 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-wm0-f72.google.com ([74.125.82.72]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1e7kin-0004AN-Db for gclcip-std-proposals@m.gmane.org; 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[78.47.120.188]) by mx.google.com with ESMTP id b16si1820952wrd.363.2017.10.26.09.09.35 for ; Thu, 26 Oct 2017 09:09:35 -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-mobl1.localnet (unknown [134.134.139.83]) by gondolin.macieira.info (Postfix) with ESMTPSA id 6B58011A770 for ; Thu, 26 Oct 2017 09:09:35 -0700 (PDT) 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-Google-Group-Id: 399137483710 List-Post: , List-Help: , List-Archive: List-Subscribe: , List-Unsubscribe: , Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:35116 Archived-At: On Thursday, 26 October 2017 01:55:04 PDT Marc Mutz wrote: > > Calculating the length of char16_t* can't be done in a constexpr way. > > ... is only C++14-constexpr (well, if you want to support reasonably > long strings, otherwise you could come up with a recursive > implementation). No, it's not constexpr at all, since I can't run SSE or do reinterpret_cast from pointer to integer and back in constexpr mode. See http://code.qt.io/cgit/qt/qtbase.git/tree/src/corelib/tools/ qstring.cpp#n163 -- Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org Software Architect - Intel Open Source Technology Center -- 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. To view this discussion on the web visit https://groups.google.com/a/isocpp.org/d/msgid/std-proposals/1931282.giciDSTxGt%40tjmaciei-mobl1. .