220 17976 <1780727.kr58duAf8b@tjmaciei-mobl4> article Path: news.gmane.org!not-for-mail From: Thiago Macieira Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Parsing Numbers Date: Mon, 18 May 2015 23:55:36 -0700 Lines: 24 Approved: news@gmane.org Message-ID: <1780727.kr58duAf8b@tjmaciei-mobl4> References: 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 1432018547 25691 80.91.229.3 (19 May 2015 06:55:47 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 19 May 2015 06:55:47 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCB4TK757YBRB3F45OVAKGQERI2U5TQ@isocpp.org Tue May 19 08:55:41 2015 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-wi0-f197.google.com ([209.85.212.197]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1YubRF-0006mx-E6 for gclcip-std-proposals@m.gmane.org; Tue, 19 May 2015 08:55:41 +0200 Original-Received: by wivs14 with SMTP id s14sf3410795wiv.1 for ; Mon, 18 May 2015 23:55:41 -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:list-post:list-help:list-archive:list-subscribe :list-unsubscribe; bh=YCpMhKdbG4dvYJrd7Q7ya2nHzhKEOhKmAPlmp78+c4g=; b=kAwYIC9INwZ+ckQutcLoXtsI+t3wVwBbDDurB8bk3pIicjfWDhQkMP4z0l2TD9aFtu ORTZevc/pVDXIrA49bJAl+RqnP/qeQVbRmebwxLye2In8JLB4/G1uNEssS8OB1UxyGjm yvq9vj6etUtTkdG+2IR8Sh8yi0WF04L0JVzLM9gsoy5lxacRO+LwBWCqzfUUoSh3X8Cm 0r5aTsx+ILWLNtZSku/qQm81qjGhAcHFkvjC7hn+uCEPH1fQuQUvNn+g2Z6AHeEkojVR b4y9k/ZsCXwbFYnuGsK+Sxak08Io5MEELjnCsOFbdax2kR79B0Y0+CW4mf2nlSycd+1K l4rQ== X-Gm-Message-State: ALoCoQlK9LhAP3hiraPzCQIKvRwzhI6qzmRaC+TpJdevgXQJrjMSr9N83eNaIFc+1wZUB94AVz5r X-Received: by 10.180.106.10 with SMTP id gq10mr12947663wib.0.1432018540973; Mon, 18 May 2015 23:55:40 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.180.74.106 with SMTP id s10ls58432wiv.4.gmail; Mon, 18 May 2015 23:55:40 -0700 (PDT) X-Received: by 10.181.27.131 with SMTP id jg3mr4215775wid.89.1432018540125; Mon, 18 May 2015 23:55:40 -0700 (PDT) Original-Received: from gondolin.macieira.info (gondolin.macieira.info. [78.47.120.188]) by mx.google.com with ESMTP id w13si17118300wjq.111.2015.05.18.23.55.40 for ; Mon, 18 May 2015 23:55:40 -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 [IPv6:2601:7:1c80:4ea:2102:b072:ec11:c415]) by gondolin.macieira.info (Postfix) with ESMTPSA id 93E5711A755 for ; Mon, 18 May 2015 23:55:39 -0700 (PDT) User-Agent: KMail/4.14.6 (Linux/4.0.0-1-desktop; KDE/4.14.6; 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.mail=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:17976 Archived-At: On Monday 18 May 2015 14:19:19 Matthew Fioravante wrote: > We may also want to think generically. Can clients easily implement > efficient std::parse routines for their own user defined types? I don't think so. Integer parsing may be acceptable, but it's borderline already -- the FreeBSD implementations of strtoull and strtoll are around 60 lines of C code, the glibc implementation is 300 lines and supports parsing of locale-specified number grouping. But floating point parsing can't reasonably be done inline. -- 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/. .