220 8632 <1abccd12-9b4f-49ab-8cfd-bad8878f09af@isocpp.org> article Path: news.gmane.org!not-for-mail From: Casey Carter Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: string_view::is_null() Date: Thu, 16 Jan 2014 14:46:31 -0800 (PST) Lines: 53 Approved: news@gmane.org Message-ID: <1abccd12-9b4f-49ab-8cfd-bad8878f09af@isocpp.org> References: <52d6c23b.6f8a440a.74c7.1675@mx.google.com> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_669_21545897.1389912391642" X-Trace: ger.gmane.org 1389912387 16166 80.91.229.3 (16 Jan 2014 22:46:27 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 16 Jan 2014 22:46:27 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBD2MLWWVRQMRBSGC4GLAKGQESJWTYWQ@isocpp.org Thu Jan 16 23:46:35 2014 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-ie0-f197.google.com ([209.85.223.197]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1W3vhq-0000IS-0g for gclcip-std-proposals@m.gmane.org; Thu, 16 Jan 2014 23:46:34 +0100 Original-Received: by mail-ie0-f197.google.com with SMTP id e14sf12981605iej.0 for ; Thu, 16 Jan 2014 14:46:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:message-id:in-reply-to:references:subject:mime-version :x-original-sender:reply-to:precedence:mailing-list:list-id :list-post:list-help:list-archive:list-subscribe:list-unsubscribe :content-type; bh=YPDX0iOSPshjkiV1cQPqdtbjTWxKw+K8jNG5wJULKAE=; b=WQp6kQ5ESj9huJeZ1+MC+Z25F5C01gL4gHmBimliOHSRyg3YooX298j/TpyC/cMI8s BADqUSB0oAD9woIwzTszJJ26TtknolnfkDC42ux0o7oMrtllOuQUEhiVwhjlwjuZVf6M Wb0lqQNzNqHWZ3XgV23GW4mO7nXoE8UuF2OlovrdncE+A9pp0cmkpV1DpKd/LWp9v6o7 s6Du6zWDUj/G/wwoLGIgmQNdBgUmu7IH8oXuzEZrQRSB8PiVu01NLbJvD01HsccFvO/X Y/iYp97zJnKS6lfurwGALgTkBQoCMpS4HF2iTAajAYQzt0knUIqZI/jv3eNdkmLul/mj oI4A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:to:message-id:in-reply-to:references :subject:mime-version:x-original-sender:reply-to:precedence :mailing-list:list-id:list-post:list-help:list-archive :list-subscribe:list-unsubscribe:content-type; bh=YPDX0iOSPshjkiV1cQPqdtbjTWxKw+K8jNG5wJULKAE=; b=nIEJFqy+Qcvf8GuMitq2MCYN1T+LL18y7oonjWC8w2Oxo81k4gE9shGPqiVkOj8frl FwGhUMG6+spBCFcdmNZkxVkMYWQ6t9wInJ4Z2u8MtiuOT3H3UULHH/uRH4Di/VUhHI3X iVV+Lp6oQ5Q9tXa9uXg+1RgpCzS/aLmD866mXbqOM/c4ongyUKUz/WWGt1AToyqyEkcW SzbuH+4v8KfBsTjIgYD6GJFyXeEVG9cc2t/U7FywvKPtZ/uA1t+NRZzREa3TqOQM9BT1 QIJr1/2rOkJjRFy9PlhRKUo1JC8e+HnMBlV3az2ag6Lm4rzXWxtt8vcDnNtrsvM1+hDO LKDg== X-Gm-Message-State: ALoCoQmfT4gdf3+QKFSSUJXw6hQSk/bX47hUm+0UV8P/1XFWfSXt1uZ3Vo3Ya8aujZeBKGvex/U2 X-Received: by 10.42.235.132 with SMTP id kg4mr3970864icb.32.1389912392941; Thu, 16 Jan 2014 14:46:32 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.182.118.163 with SMTP id kn3ls444718obb.37.gmail; Thu, 16 Jan 2014 14:46:32 -0800 (PST) X-Received: by 10.182.117.138 with SMTP id ke10mr1817obb.42.1389912392331; Thu, 16 Jan 2014 14:46:32 -0800 (PST) In-Reply-To: <52d6c23b.6f8a440a.74c7.1675@mx.google.com> X-Original-Sender: cartec69@gmail.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:8632 Archived-At: ------=_Part_669_21545897.1389912391642 Content-Type: text/plain; charset=UTF-8 On Wednesday, January 15, 2014 11:15:36 AM UTC-6, Billy O'Neal wrote: > > It should be discouraged because we don't want to have to write null > checks in every function under the sun; it is about preventing callers from > supplying unexpected results. > "Every function under the sun" must already be able to deal with an empty string_view, given that a null string_view must also necessarily be empty, there's no need to check for null as a special case. -- --- 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/. ------=_Part_669_21545897.1389912391642 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
On Wednesday, January 15, 2014 11:15:36 AM UTC-6, Billy O'= Neal wrote:
It should be discouraged bec= ause we don't want to have to write null checks in every function under the= sun; it is about preventing callers from supplying unexpected results.

"Every function under the sun" mus= t already be able to deal with an empty string_view, given that a null stri= ng_view must also necessarily be empty, there's no need to check for null a= s a special case.

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