220 4859 article Path: news.gmane.org!not-for-mail From: Jeffrey Yasskin Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Proposal: std::sequence Date: Tue, 4 Jun 2013 13:12:01 -0700 Lines: 35 Approved: news@gmane.org Message-ID: References: <4551abbc-43aa-4520-a91a-f8eb25a90588@isocpp.org> <2c8e6079-9c87-425a-93e2-39251df57cd8@isocpp.org> <9f1cace3-0503-4a3c-a8ce-d7546564b3ef@isocpp.org> <1c991e6e-6bc3-4822-9ffd-7f2508e63974@isocpp.org> 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 1370376745 2200 80.91.229.3 (4 Jun 2013 20:12:25 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 4 Jun 2013 20:12:25 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBDDM34EO6QDRBJ4UXGGQKGQEQY3XVRA@isocpp.org Tue Jun 04 22:12:25 2013 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-ve0-f197.google.com ([209.85.128.197]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Ujxai-00037T-Bi for gclcip-std-proposals@m.gmane.org; Tue, 04 Jun 2013 22:12:24 +0200 Original-Received: by mail-ve0-f197.google.com with SMTP id d10sf798733vea.8 for ; Tue, 04 Jun 2013 13:12:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=x-beenthere: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:x-google-group-id:list-post:list-help:list-archive :list-subscribe:list-unsubscribe:content-type; bh=pJSSpNcYj3p7Hi/7CYPmKj11fNjgnB3DdO53qsyjhMQ=; b=oe4h0+vM/yuQpYO4ubxqOJmvhHjZQLJxb54ayv2szu+efDcRDECAQU5qfK2Cu4N69M JDu8ZLglcnhTukMTIVWl4Td5Rt26f18f4N2IiKFtfudtLkMuIod3s6XBYa6M3ESIn9EQ nrScm7srJOUoZmFwTI9gHb3MsmLSgm8sPKn0Cp0I9Hl64xaOJ3byjWheIqmvYj2GkUw0 EJZLuFK2VE1DErhfvIOikWfy+IScLz/Rqqfdsg0NpQUnOn23AZ7PViANfkhEB6PFZYtW hPAqiKHRnvrkdJkGHGibLgLPRejQ5RVMVv/0/iO9SpHJPc34x/VgS9PjG3f/NAUx/Sh0 JQeQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=x-beenthere:mime-version:in-reply-to:references:from:date :message-id:subject:to:x-gm-message-state:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:x-google-group-id:list-post:list-help:list-archive :list-subscribe:list-unsubscribe:content-type; bh=pJSSpNcYj3p7Hi/7CYPmKj11fNjgnB3DdO53qsyjhMQ=; b=YehThMMi6tmdfUjej/hL7NdVZkHpN8vq/ZEZYTBozhxuKFP7Ql7+4WmLJtaQlu15cG AXj3zeTTfQ0XGN3rK5DTAkeO6pCkkMUfIJwf3tGCPs68lTtjNdtkCuo6a5Fb8RMp0MB9 NzW9zaoQtH0AaZHvlAh/g+ve/tgxD8GAl+bH+WfZMvWIVrjDBVTPFEjV3pNvN9BAoAsJ D+Z4wDO1H4zJ/D2Q7MmsZsDJ1lrlTPPtPRXBXk7P3++pWB44P2F9sQACAyZN5M0L69yM xPhFwTAuZugV2WDOTc1prYDgpBv5oG/dM1BgeNgS+h55JPg/wdmD/cT3rcvkpF4suVSw ZeVA== X-Received: by 10.224.174.145 with SMTP id t17mr17204804qaz.4.1370376743454; Tue, 04 Jun 2013 13:12:23 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.49.75.10 with SMTP id y10ls541907qev.60.gmail; Tue, 04 Jun 2013 13:12:21 -0700 (PDT) X-Received: by 10.224.198.194 with SMTP id ep2mr24485734qab.51.1370376741282; Tue, 04 Jun 2013 13:12:21 -0700 (PDT) Original-Received: from mail-qc0-x22c.google.com (mail-qc0-x22c.google.com [2607:f8b0:400d:c01::22c]) by mx.google.com with ESMTPS id m3si10523054qcb.45.2013.06.04.13.12.21 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 04 Jun 2013 13:12:21 -0700 (PDT) Received-SPF: pass (google.com: domain of jyasskin@google.com designates 2607:f8b0:400d:c01::22c as permitted sender) client-ip=2607:f8b0:400d:c01::22c; Original-Received: by mail-qc0-f172.google.com with SMTP id j10so440210qcx.3 for ; Tue, 04 Jun 2013 13:12:21 -0700 (PDT) X-Received: by 10.224.70.147 with SMTP id d19mr25112804qaj.91.1370376741101; Tue, 04 Jun 2013 13:12:21 -0700 (PDT) Original-Received: by 10.229.78.22 with HTTP; Tue, 4 Jun 2013 13:12:01 -0700 (PDT) In-Reply-To: X-Gm-Message-State: ALoCoQmXlkCWmopc1D+e27ORY4VDMF0rlRxJ+yCB/41x+zisA9Fio/hAoNqDSXXG9DhHd8K7t2Ik+pKag+ixcBSYPxwVzcdKCzTpAiBJ6rRfOxGSSd/Q4BhlyH1nTyV7cSdo4C1+J37cr7AAaAsopRnkU3RcoVHKEyKlLI4o26RHLUZJXSgmuiJLEhxG7vUh4BHPG9DxG5HX 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::22c as permitted sender) smtp.mail=jyasskin@google.com; dkim=pass header.i=@google.com; dmarc=pass (p=REJECT dis=none) d=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:4859 Archived-At: On Tue, Jun 4, 2013 at 12:03 PM, Nevin Liber wrote: > On 4 June 2013 13:54, Jeffrey Yasskin wrote: >> >> >> Please don't say "clearly" here. Assignability is the default in C++, >> and it's quite possible that our implementations stumbled into it >> without actually having a firm use case. It would take actual research >> to determine that we have a real need. (I suspect we do, but my >> suspicion doesn't prove anything, and I'm not currently planning to >> investigate in detail.) > > > Other than dynarray, is there any class in the standard that is copyable but > not assignable? I don't think so. The consistency there is enough that Gaby got the terminology wrong when suggesting that standard containers should support (some) non-assignable types. IMO, that's a fine sort of argument, and one I agree with. I was only commenting on Nicol's attempt to use Google's and LLVM's experience inappropriately. Jeffrey -- --- You received this message because you are subscribed to the Google Groups "ISO C++ Standard - Future Proposals" group. 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