220 4742 article Path: news.gmane.org!not-for-mail From: =?ISO-8859-1?Q?Daniel_Kr=FCgler?= Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Remove vector? Date: Thu, 30 May 2013 08:11:38 +0200 Lines: 76 Approved: news@gmane.org Message-ID: References:

<7371f4b8-8c47-4f17-af1e-902a5c8b17e4@isocpp.org> <51A638CF.5050905@wanadoo.fr> <51A670DC.2010102@wanadoo.fr> <51A6EC7F.4090308@wanadoo.fr> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1369894300 31949 80.91.229.3 (30 May 2013 06:11:40 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 30 May 2013 06:11:40 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCT7RVFA4QORBG63TOGQKGQEZRLS3OY@isocpp.org Thu May 30 08:11:41 2013 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-lb0-f200.google.com ([209.85.217.200]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Uhw5M-0007Jv-DQ for gclcip-std-proposals@m.gmane.org; Thu, 30 May 2013 08:11:40 +0200 Original-Received: by mail-lb0-f200.google.com with SMTP id w20sf204209lbh.3 for ; Wed, 29 May 2013 23:11:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-beenthere:mime-version:in-reply-to:references:date:message-id :subject:from: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:content-transfer-encoding; bh=RwXzTrBGRuIMkvkkioOCytfqFlFc9l/zDdCpFBWqXwY=; b=l4tJi2UigwoY9gfky5ptTMkHPFljgPoCjh/e45Nq917cNCWJ/QrKbSIr5CdaxDtQSa 0KFkrCYWeoQ9UMkeJzdw2E0qc6TBbiBVkt/czUnjm7onzMitWU7nQUxbYN+DleYTVHyn qD8E8YToq7JrS8arfS24ZBakAJklk2yOxOnrltFTmMF0F2Y6YYNcws4S+/wuwntLNNiy b+MxjAvFtJZaFyDDSvd93lQSOFRVQoIq6v0na8ExitCiP50KC3KuCVnyejkVJ9PLfe66 2xO2837mAujLxxt1Qk0ul9iJzcyvuGlR/q9gYOsQ8XX5SwFdLMGBIvFl9wB/PwPv7g9c g9Cg== X-Received: by 10.180.210.161 with SMTP id mv1mr8822237wic.1.1369894299728; Wed, 29 May 2013 23:11:39 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.180.211.106 with SMTP id nb10ls1783411wic.39.canary; Wed, 29 May 2013 23:11:39 -0700 (PDT) X-Received: by 10.194.157.165 with SMTP id wn5mr3095924wjb.15.1369894299131; Wed, 29 May 2013 23:11:39 -0700 (PDT) Original-Received: from mail-wg0-x230.google.com (mail-wg0-x230.google.com [2a00:1450:400c:c00::230]) by mx.google.com with ESMTPS id ch10si7511985wib.18.2013.05.29.23.11.39 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 29 May 2013 23:11:39 -0700 (PDT) Received-SPF: pass (google.com: domain of daniel.kruegler@gmail.com designates 2a00:1450:400c:c00::230 as permitted sender) client-ip=2a00:1450:400c:c00::230; Original-Received: by mail-wg0-f48.google.com with SMTP id f12so6493608wgh.15 for ; Wed, 29 May 2013 23:11:39 -0700 (PDT) X-Received: by 10.194.237.133 with SMTP id vc5mr3027811wjc.37.1369894299036; Wed, 29 May 2013 23:11:39 -0700 (PDT) Original-Received: by 10.216.211.194 with HTTP; Wed, 29 May 2013 23:11:38 -0700 (PDT) In-Reply-To: <51A6EC7F.4090308@wanadoo.fr> X-Original-Sender: daniel.kruegler@gmail.com X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of daniel.kruegler@gmail.com designates 2a00:1450:400c:c00::230 as permitted sender) smtp.mail=daniel.kruegler@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:4742 Archived-At: 2013/5/30 Vicente J. Botet Escriba : > Le 29/05/13 23:19, Vicente J. Botet Escriba a =E9crit : > > Le 29/05/13 19:37, Nevin Liber a =E9crit : > > On 29 May 2013 12:20, Vicente J. Botet Escriba > wrote: >> >> Le 28/05/13 22:12, Howard Hinnant a =E9crit : >> >> On May 28, 2013, at 4:00 PM, Nicol Bolas wrote: >> >> Personally, I agree with Howard; we should add a class that has all of >> this functionality (presumably with some degree of required sizing) that >> would be a drop-in replacement for those who need the sizing features of >> vector. But the question remains: even with a drop-in replacement,= how >> much code will be broken because of this? >> >> Model this after the auto_ptr -> unique_ptr transition: >> >> Step 1: Introduce bit_vector (or whatever) and deprecate the vector >> specialization. /Somehow/ motivate people to migrate. >> >> I think that we will need also to add a std::new_vector that behaves >> like std::vector but doesn't have the bool specialization and > > > * I'd hate to use a code base that had two different, unrelated types for > doing the exact same thing, since ultimately these things end up interfac= es. > Actually, I already have that, as people are trying to migrate from Boost > over to std (such as shared_ptr), and it is anything but easy (because we > are dependent on libraries developed for/by other groups, and changing th= ose > interfaces is a scheduling nightmare). > > You are right. What we would need is 'single' type that behaves as the > current vector except for bool and that behaves as vector if vec= tor > was not specialized. I don't know if we can specialize an alias and if th= e > following is correct > > template > class new_vector { the same definition as vector now }; > > template > alias vector=3D new_vector ; > > template < typename Allocator> > class vector { the same definition as now } ; > > If this is correct, > > Hrr, It seems that we can not specialize alias templates. This is by design. If you need that feature, use a class template to realize that and use an alias to refer to the class template. - Daniel --=20 ---=20 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 e= mail 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-proposa= ls/?hl=3Den. .