220 11518 article Path: news.gmane.org!not-for-mail From: Sean Middleditch Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Feedback to n3940 [Filesystem] Date: Wed, 18 Jun 2014 17:01:48 -0700 Lines: 28 Approved: news@gmane.org Message-ID: References: <539D8898.1030103@gmx.de> <9fe25f12-aef5-4e1e-a9ef-e4f47391ad6b@isocpp.org> <539F41FB.4040601@gmx.de> <72d0e0dd-477e-40cb-b0b8-3c8e154cb43f@isocpp.org> <6d7b8bf6-170a-40af-ae94-802bfbd091bf@isocpp.org> <6d07a6d0-7bab-4273-87a2-4ba132e2a97a@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 1403136119 25103 80.91.229.3 (19 Jun 2014 00:01:59 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 19 Jun 2014 00:01:59 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCDODCNR2QPRB3OQRCOQKGQEDYDCELI@isocpp.org Thu Jun 19 02:01:53 2014 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-pa0-f69.google.com ([209.85.220.69]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1WxPna-0007UA-RS for gclcip-std-proposals@m.gmane.org; Thu, 19 Jun 2014 02:01:51 +0200 Original-Received: by mail-pa0-f69.google.com with SMTP id kq14sf5577659pab.4 for ; Wed, 18 Jun 2014 17:01:49 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:sender:in-reply-to:references:date :message-id:subject:from: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=ZjYpzrHm35/1bLlrP2L0v4pNWwV3r1A16zUXIyoKHRM=; b=LTuhm2LOQkteoe0Ahr6+KHtrz/Pfy2dBRMFcACPIXZQ+ODZ6oT+v7IJ4fKgFPt8qnU pBwI8AjLwLF/Jx42IskqUTFsZzyfWlmxyG6DA+3MxsXSN0wQbwrFFhZTe2RrKKCdNCSU cEqJO6ssXJu2yVVIObnnLRqFifQXkM13L/X+KsiA0TIVF+XSNo2rXFskhmPr9qyCnXT6 T8Chb3193r1z+UJPLKoTRKyGu+BWB5rsrJ6F6y1ZNX/0JGDRtdH8QDli7SXS2ZSehph9 nbHKhEn9I9KCqJusSdfPvYwDg4BAz9rqNM6wKF7Lz91W8/guztjQhqV5fWk65kte/JP0 eSYw== X-Gm-Message-State: ALoCoQk4l1srfoqxRL2YQR2vbV8r/hafgz4nQ4ChhOLKs1OJIJyBFVg+OCBNaT7b2EF7/Ezwo2Mo X-Received: by 10.66.236.136 with SMTP id uu8mr775984pac.13.1403136109807; Wed, 18 Jun 2014 17:01:49 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.140.85.138 with SMTP id n10ls332372qgd.4.gmail; Wed, 18 Jun 2014 17:01:49 -0700 (PDT) X-Received: by 10.221.37.1 with SMTP id tc1mr850872vcb.32.1403136109013; Wed, 18 Jun 2014 17:01:49 -0700 (PDT) Original-Received: from mail-ve0-x229.google.com (mail-ve0-x229.google.com [2607:f8b0:400c:c01::229]) by mx.google.com with ESMTPS id ev7si1560267vdb.36.2014.06.18.17.01.48 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 18 Jun 2014 17:01:48 -0700 (PDT) Received-SPF: pass (google.com: domain of sean.middleditch@gmail.com designates 2607:f8b0:400c:c01::229 as permitted sender) client-ip=2607:f8b0:400c:c01::229; Original-Received: by mail-ve0-f169.google.com with SMTP id pa12so1605593veb.14 for ; Wed, 18 Jun 2014 17:01:48 -0700 (PDT) X-Received: by 10.52.94.8 with SMTP id cy8mr640424vdb.39.1403136108700; Wed, 18 Jun 2014 17:01:48 -0700 (PDT) Original-Sender: sean.middleditch@gmail.com Original-Received: by 10.58.116.173 with HTTP; Wed, 18 Jun 2014 17:01:48 -0700 (PDT) In-Reply-To: <6d07a6d0-7bab-4273-87a2-4ba132e2a97a@isocpp.org> X-Original-Sender: sean@middleditch.us X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of sean.middleditch@gmail.com designates 2607:f8b0:400c:c01::229 as permitted sender) smtp.mail=sean.middleditch@gmail.com; dkim=pass header.i=@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:11518 Archived-At: On Wed, Jun 18, 2014 at 2:46 PM, Olaf van der Spek wrote: > Why would such an app need to know writability for each image? It might display an icon indicating that it is read-only or hide/disable buttons by default that modify the image. There are plenty of examples of applications like this. Many text editors use this information. Content systems like 3D editors and game editors often do it. Web-based file services sometimes do it. A file manager needs it. Office does it. etc. Clearly more than just `ls` that uses such a basic operation. > Opening read-write at first and falling back to read-only if that fails > seems reasonable. You need to do something anyway, right? "Try an operation you don't actually need to do in order to check a property" is not, to me, a good definition for "reasonable." Ultimately it's not a huge deal. Platform APIs aren't going away anytime soon -- --- You received this message because you are subscribed to the Google Groups "ISO C++ Standard - Future Proposals" group. 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