220 24899 <73454c65-98c8-4327-a0f4-858652f5009e@isocpp.org> article Path: news.gmane.org!not-for-mail From: martin.tillmann@gmail.com Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Range erase for std::vector and other containers. Date: Thu, 3 Mar 2016 07:10:36 -0800 (PST) Lines: 76 Approved: news@gmane.org Message-ID: <73454c65-98c8-4327-a0f4-858652f5009e@isocpp.org> References: <9a7a06c1-860e-44b1-a865-8467c39d7e91@isocpp.org> <5846f36a-8119-4ec0-b1bd-fcfe1bce27f7@isocpp.org> <024aea92-794f-435e-97a3-ad43dbc478bc@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_215_1380948859.1457017836955" X-Trace: ger.gmane.org 1457017848 15506 80.91.229.3 (3 Mar 2016 15:10:48 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 3 Mar 2016 15:10:48 +0000 (UTC) To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBDFIZEER6YPBB3VH4G3AKGQEDIVKWOI@isocpp.org Thu Mar 03 16:10:40 2016 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-pf0-f200.google.com ([209.85.192.200]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1abUtj-0004zb-Vq for gclcip-std-proposals@m.gmane.org; Thu, 03 Mar 2016 16:10:40 +0100 Original-Received: by mail-pf0-f200.google.com with SMTP id o67sf37563392pfb.2 for ; Thu, 03 Mar 2016 07:10:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:message-id:in-reply-to:references:subject:mime-version :x-original-sender:reply-to:precedence:mailing-list:list-id :x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=YzzY6mpHZ2e3qQQJBJ41dYkvkG9liIUj1uFVDc6qXAQ=; b=orNWmN4JiVOYD0PYRBwb9yQvL3eGOc83PqtKbazUij29FuqrdvWtFGLOBtF+zFARmB Jq7JbogmfS9fzvXZOPhBNsn1EgKC+8EP5yZafgYMSUDWnBpJxsjpTgaw9L9rKy9cMecT UCZnlwrGkzGQkDyCc/tR+Ql5fe1H6Qn/S9LRi/T50qqQ6DIQfW1rNV7VQc/qR6Nmv0UN GdVUbmGWuGv7sbxIXVLEMiAAMxF6rzHNITNwRV+44V9QJcA+eLzvKjndGqFQTKbfTvnB f5uG4TGIVvlAgAYLcB6sSxMnhTQ3O8jH8BgdxUCCcEOwHC1x087BWNtKGnIxMjKiltfF /1tw== 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 :x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=YzzY6mpHZ2e3qQQJBJ41dYkvkG9liIUj1uFVDc6qXAQ=; b=KRO1QXwnNXVRK+h5x+8N7nJ2wMTVdwZgYuu60zRwJwCUi1XZvvGqyNajWaFJjEBMIV e7PaPtIOJsym0mlKYo+f+tX1QfmcKBSMKadKeZ/qoTHWWYnnboykeFntnrps2QDNPgHs PyKBGWyaR0Tfw8EVc7LUyP93LYgraP/rleT3Lv1L2MvnhzJff4DxYjpgtSTTQmw0aYlW RVpW3BjT9JKdJq0k4cDpfWLHrdNM3s+n5mwgtTeBSzx+GvLgR/HjETHvViFbeFobGFV8 r26u8ajo95OlFqV4Hbb9eBzCU5zUvnkczrV79+EtYnz0mc9Y43yXMJtUypp56X67cBkX z/BA== 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:x-spam-checked-in-group:list-post:list-help :list-archive:list-subscribe:list-unsubscribe; bh=YzzY6mpHZ2e3qQQJBJ41dYkvkG9liIUj1uFVDc6qXAQ=; b=Zs8Vtq1Ui482eGBMYuhy4GuQLAfRTLg/vi3Wol3+vZEcp1cWmZElCl9xMTJnD437vF OJ1SKrVUoWbKpm4vo6EJwgV/GWYAdTlMrU8HnvwCmtUQlSG3f6ramEt/nld566jRtpgT 0bsSOnrot+RqnEg0Yh054t4chbbTshJT5dNjhuVS0mY3pqEDviYycV3T9FcYd7cE/Sdm +dsxugWaN/7ocU2ZLZaigw6jeF4XijDngWmNfE3qHZR+fhadCmovwZfLbj/0f+Jtfapm f653P5d2DcYfkJ9AHeGOhp6hjVTJg04nHcglYGSsIDHrhrubj0MWVzxyrIHs+Il7gaOJ /x1g== X-Gm-Message-State: AD7BkJKQYoNquiG98v4cl6XOhP2NA57RONaTFk26oVA3CTlQMReog1/GpeH14vMttRrUGw== X-Received: by 10.98.74.203 with SMTP id c72mr2021302pfj.8.1457017838916; Thu, 03 Mar 2016 07:10:38 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.107.8.230 with SMTP id h99ls2360449ioi.75.gmail; Thu, 03 Mar 2016 07:10:37 -0800 (PST) X-Received: by 10.50.66.236 with SMTP id i12mr176812igt.7.1457017837896; Thu, 03 Mar 2016 07:10:37 -0800 (PST) In-Reply-To: <024aea92-794f-435e-97a3-ad43dbc478bc@isocpp.org> X-Original-Sender: martin.tillmann@gmail.com Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Spam-Checked-In-Group: std-proposals@isocpp.org 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:24899 Archived-At: ------=_Part_215_1380948859.1457017836955 Content-Type: multipart/alternative; boundary="----=_Part_216_1872725034.1457017836955" ------=_Part_216_1872725034.1457017836955 Content-Type: text/plain; charset=UTF-8 > > I can't say that I would assume that this is what's going on. The code is > clearly calling a member function of `v`, so the natural assumption is that > the operation is mutating `v`. > Yes. All values that appear in the given range (here u) are removed from v. > > But I do agree that the call doesn't look like what it's doing. There's no > reason to assume that `erase` would be doing a *search* of a `vector`, > particularly when you're passing a range of iterators (not to mention, this > conflicts with an existing overload). If such a call were truly needed, it > clearly needs its own *name*. > erase already performs this functionality for single elements and ranges of the vector itself. -- 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. To view this discussion on the web visit https://groups.google.com/a/isocpp.org/d/msgid/std-proposals/73454c65-98c8-4327-a0f4-858652f5009e%40isocpp.org. ------=_Part_216_1872725034.1457017836955 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
I can't say that I would assume that this is what's going = on. The code is clearly calling a member function of `v`, so the natural as= sumption is that the operation is mutating `v`.

Yes. All values that appear in the given range (here u) are removed from v.
=C2=A0

But I do = agree that the call doesn't look like what it's doing. There's = no reason to assume that `erase` would be doing a search of a `vecto= r`, particularly when you're passing a range of iterators (not to menti= on, this conflicts with an existing overload). If such a call were truly ne= eded, it clearly needs its own name.

erase alre= ady performs this functionality for single elements and ranges of the vecto= r itself.

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