220 8653 article Path: news.gmane.org!not-for-mail From: Jeffrey Yasskin Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: string_view::is_null() Date: Fri, 17 Jan 2014 12:22:21 -0800 Lines: 23 Approved: news@gmane.org Message-ID: References: <8045a4d2-721d-4725-8bb7-7a91b6f53ec8@isocpp.org> <186E0927-C962-4E34-AED0-E7509DD1F0A0@gmail.com> <7aad44d8-6b4e-438a-b309-bd898b994b34@isocpp.org> <9C2C439F-7983-4224-B272-53CAD0E2E456@gmail.com> 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 1389990158 9748 80.91.229.3 (17 Jan 2014 20:22:38 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 17 Jan 2014 20:22:38 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBDDM34EO6QDRBE5C42LAKGQEI5FO3RY@isocpp.org Fri Jan 17 21:22:45 2014 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-ig0-f200.google.com ([209.85.213.200]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1W4FwC-0000Im-I4 for gclcip-std-proposals@m.gmane.org; Fri, 17 Jan 2014 21:22:44 +0100 Original-Received: by mail-ig0-f200.google.com with SMTP id k19sf4172132igc.3 for ; Fri, 17 Jan 2014 12:22:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :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=QC+m2g42oinV0Cn+pPDYtymWD9CHKRlFQkprgLvyhEI=; b=JxctzyDTikPmI+QYgEvZpN90Pv+3/00x4ZkQPO0/xEHixi1L9jhhT+fqcM6DuFjH/N PT7KiQsDJf1EiTKuGbUXuWub0apoVqeF3fsRPKBfU0Rm6Ma/5IrFTWjL/aAeF2OfR/LJ X6z7o1JGsEN6BaXEFiTFIlfIdAzh7Nc3nLBOmqR1phpXcFXQhm1J/F8O9C05LAOp1yiS /nCg8FlrN+ggWiD3EnLWyXt3SsGIe0fLqyFsjPgCA7DY5RxJnFTGZ7AeRvk778RvPCIh LfsD7oirrFn4+w5TAExOoSgIt7U5vYGPutjEMl91acJTx7xOm0oka85vJ90dAOmMBdmZ PoUw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to: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=QC+m2g42oinV0Cn+pPDYtymWD9CHKRlFQkprgLvyhEI=; b=QZjqfJMqRiUXbxU+IlgVWF7cM3JmtoZguqnnVsSu9Cf8dA4VtOmtKhK2S2ShcTNkpF AiGH2YqlFHiy7XIRKnpaTT1hDHALyL73cxHeoG/Nf8lTOC+zyIunwh/+dIf87aSWTJ7O cupnI2xwwVlGsS7dVbLaoce+ZSrifkV2gvtXIXk0wJym60Srd2n44JbUxHSkkIcelCvb TCCcUkbGPTTo7NtB/HaII9XkFXDWAs/hgK57sl/MuHL85hJV5TtKg8V2k76a/qi3aXfS 4eP04GAJJ1VGGdCyZiHXL8YC7r5KhmLJ1bsFh7W89bx7fQVXuc+7KD/N0oCkkqG/fvJU JzPQ== X-Gm-Message-State: ALoCoQl5/oufpnXR3I/8PebIziyKvabdoeZNCyp63Cj9NVY1ZakMn4b6YWuuhulUJ63ndUZj+mLp X-Received: by 10.182.111.227 with SMTP id il3mr1469810obb.41.1389990163633; Fri, 17 Jan 2014 12:22:43 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.49.24.69 with SMTP id s5ls576172qef.17.gmail; Fri, 17 Jan 2014 12:22:42 -0800 (PST) X-Received: by 10.140.37.146 with SMTP id r18mr6301397qgr.61.1389990162879; Fri, 17 Jan 2014 12:22:42 -0800 (PST) Original-Received: from mail-qc0-x232.google.com (mail-qc0-x232.google.com [2607:f8b0:400d:c01::232]) by mx.google.com with ESMTPS id x4si14041925qad.12.2014.01.17.12.22.42 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 17 Jan 2014 12:22:42 -0800 (PST) Received-SPF: pass (google.com: domain of jyasskin@google.com designates 2607:f8b0:400d:c01::232 as permitted sender) client-ip=2607:f8b0:400d:c01::232; Original-Received: by mail-qc0-f178.google.com with SMTP id m20so4125852qcx.9 for ; Fri, 17 Jan 2014 12:22:42 -0800 (PST) X-Received: by 10.140.27.103 with SMTP id 94mr6343809qgw.45.1389990162560; Fri, 17 Jan 2014 12:22:42 -0800 (PST) Original-Received: by 10.229.208.138 with HTTP; Fri, 17 Jan 2014 12:22:21 -0800 (PST) In-Reply-To: X-Original-Sender: jyasskin@google.com X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of jyasskin@google.com designates 2607:f8b0:400d:c01::232 as permitted sender) smtp.mail=jyasskin@google.com; dkim=pass header.i=@google.com; dmarc=pass (p=REJECT dis=NONE) header.from=google.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:8653 Archived-At: On Fri, Jan 17, 2014 at 12:18 PM, Nevin Liber wrote: > On 17 January 2014 14:11, Jeffrey Yasskin wrote: >> >> If it is, I intend to also >> remove the precondition on the string_view(data, size) to let people >> explicitly put nullptr in. > > > I'd like to, mainly because it makes it easy to create a string_view from a > vector by using v.data() and v.size(). Having to special case a check > for nullptr (such as in string::string(const char*, size_t)) for what is > otherwise a perfectly valid 0-sized range is just annoying. Ah, vector.data() doesn't guarantee non-null results. :( That's a good argument. -- --- 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/. .