220 31020 <46ec3307-ecfe-493c-b260-f2a39578d5ba@isocpp.org> article Path: news.gmane.org!.POSTED!not-for-mail From: Olaf van der Spek Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: operator<< for std::string Date: Tue, 21 Feb 2017 09:11:13 -0800 (PST) Lines: 77 Approved: news@gmane.org Message-ID: <46ec3307-ecfe-493c-b260-f2a39578d5ba@isocpp.org> References: <7552b5b4-e778-46a2-a6f8-fabca5b16dc4@isocpp.org> <75e1c827-a2af-4dfa-9426-dc5a00a0d408@isocpp.org> <85aefeb5-3c83-47de-a91d-3aef22d6a1ec@isocpp.org> <5f77cec0-c0b3-4993-9c3e-318c7e985f7f@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_1461_1294403352.1487697073697" X-Trace: blaine.gmane.org 1487697077 28482 195.159.176.226 (21 Feb 2017 17:11:17 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 21 Feb 2017 17:11:17 +0000 (UTC) To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBC5NB45SSABBBMXJWHCQKGQE6XYITHI@isocpp.org Tue Feb 21 18:11:12 2017 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-it0-f71.google.com ([209.85.214.71]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cgDy1-0006eP-Kq for gclcip-std-proposals@m.gmane.org; Tue, 21 Feb 2017 18:11:11 +0100 Original-Received: by mail-it0-f71.google.com with SMTP id y196sf195436132ity.1 for ; Tue, 21 Feb 2017 09:11:15 -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=JWO3Y+xNyTarjLGeSiN2by428obpvv5GjeWdzgvis2Q=; b=i3askOE8eds5PVYhJuX4XUmpsyptHIC2+9tosvMdO0c2xhh8AV+mDp6rf2fkD9m3u7 4vNhyxNqZTB7V9FnUKe6UyS7wV/ArOcQLKNrWcZf2ob/3fgN94DAPrIr8CuqUyW/g3mF Na6jK7OXl9X1lEXDRsC+gBI6s1rpV4yTrujlAJ6aIJdDQAH2Lj2ozt/0fH53erXJZHxw z8dEw9Cg2vFEonFcXVGFY8CWK6NTjK3OcBzUYdpmBP5FOgFHBeR4G9VD04oe7sJHyct6 rdccqCzwYYsUy3Jb2y5+1iFhc3n4uq71sSM9ql/rh/kqFAowZSSSUtI+youzPzXqGK7P cbUA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; 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=JWO3Y+xNyTarjLGeSiN2by428obpvv5GjeWdzgvis2Q=; b=IjG07Ub4Hnqg3veDOePT7hn3nqMofmMKg3iXjMn3bG9OmNjsDAOSlqW0OGQeoRQKUm GJM+IFzoKtmRxTBjXrl6SG0zhgM0Gd0weY6OnFJ6W/bhptli/HbL5szwBrXRvmm4t9Fk bF6slkVpprM2Mn3evxORNC1/DremDSKVhKXgnA2AVQ9GF1my70RRR6Ow+3W84Nvu8KOP xOar0kgj3bEfsZDfZFdFOJvtggDEOu/iAn58I2WzJg5TuapPo1kBuk1spU6/i5GbmY4t ENASf1wzQR0g7BuDMSeBtBMOQEcGQBie7xBxZ2DGpFQRpWgpxny+lWRIKwumQbucD0qU +Ehw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; 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=JWO3Y+xNyTarjLGeSiN2by428obpvv5GjeWdzgvis2Q=; b=LRHcHgJ/T5eVUuCpLMRbHskbZr/o/7rcKJkD7oo4OEi8TAOGVCE3aNNSTKaOZE86CE NMK/Qzf+wAxCjQfMMk7mKldDtBToSyQ/9MqSoDjq/lhJ0AZK09Q16MNMzJ8lPnisi2eJ CVnQFxHr+y3afcuUig/ng/IrbdN142Mt63YCskz22gVa4HgSElK5nHi+6tfqCy31J3X1 u1qfBAme7A/nSZmTZZRhC162MIdzH6mq83Yv7bnqY1kSX5ZnFpWvWcbvmdR1pwhuO12g Qw/fnAicpVMLwkGpdmnotJbLmd7TNe+snZCr0Lph5jFRnA96kM+YeoNUyKoxUeqrXwRp wRlw== X-Gm-Message-State: AMke39nN+1neNhJ0Zi8mium6vWzIY5arCejNJQxkOmaG/epG+ArfQJQhIfNvs0CH4OJztQ== X-Received: by 10.36.37.199 with SMTP id g190mr11267247itg.0.1487697075348; Tue, 21 Feb 2017 09:11:15 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.157.32.34 with SMTP id n31ls13495164ota.4.gmail; Tue, 21 Feb 2017 09:11:14 -0800 (PST) X-Received: by 10.157.17.114 with SMTP id p47mr1784371otp.6.1487697074583; Tue, 21 Feb 2017 09:11:14 -0800 (PST) In-Reply-To: X-Original-Sender: olafvdspek@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:31020 Archived-At: ------=_Part_1461_1294403352.1487697073697 Content-Type: multipart/alternative; boundary="----=_Part_1462_396766727.1487697073697" ------=_Part_1462_396766727.1487697073697 Content-Type: text/plain; charset=UTF-8 Op dinsdag 21 februari 2017 17:21:57 UTC+1 schreef Nicol Bolas: > > I do not *like* iostreams. I'd rather we have something better and > faster. But stringstream solves the problem that the OP wants solved quite > adequately. > Performance matters. Syntax matters. pilfer() is nice but I don't think it solves everything. > The principle performance problem that stringstream has is the additional > copy after formatting. Get rid of that, and most of the performance > difference goes away. > What happened to performance issues related to locales and virtual calls? -- 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/46ec3307-ecfe-493c-b260-f2a39578d5ba%40isocpp.org. ------=_Part_1462_396766727.1487697073697 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable


Op dinsdag 21 februari 2017 17:21:57 UTC+1 schreef= Nicol Bolas:
=
I do not like iostreams. I'd rather we have something = better and faster. But stringstream solves the problem that the OP wants so= lved quite adequately.

P= erformance matters.
Syntax matters.

pilf= er() is nice but I don't think it solves everything.
=C2=A0= =C2=A0
<= div>
The principle performance problem that stringstream has is the add= itional copy after formatting. Get rid of that, and most of the performance= difference goes away.

What happened to performance issues related to locales and virtual calls?=

=C2=A0

--
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