220 30994 article Path: news.gmane.org!.POSTED!not-for-mail From: HarD Gamer Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: operator<< for std::string Date: Mon, 20 Feb 2017 08:42:45 -0800 (PST) Lines: 94 Approved: news@gmane.org Message-ID: References: <7552b5b4-e778-46a2-a6f8-fabca5b16dc4@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_1000_1122804971.1487608965677" X-Trace: blaine.gmane.org 1487608968 11561 195.159.176.226 (20 Feb 2017 16:42:48 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 20 Feb 2017 16:42:48 +0000 (UTC) To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBCW7HXOKQ4BRBBVZVTCQKGQEGV65D6A@isocpp.org Mon Feb 20 17:42:43 2017 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-ua0-f198.google.com ([209.85.217.198]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cfr2v-0002Jb-50 for gclcip-std-proposals@m.gmane.org; Mon, 20 Feb 2017 17:42:41 +0100 Original-Received: by mail-ua0-f198.google.com with SMTP id j56sf53685566uaa.0 for ; Mon, 20 Feb 2017 08:42:47 -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=QGp8LZqdHUD4WPy9qUDqCI+s5pCzQewV7sAhs7iLNS8=; b=RVkM3yLbFbRNkMC3JrJseBDA69w7g3josVNHOjIRJ3nZ3U7mavHKcjkhvDnwhceOFH gZ3KteITeNRL7ERfBVKY5susIzme9F4rRRTHcZr3vZvlmy7ndU1ScO+iZ+m53Ei2uj0z 9Lzmo0GPS+IUkqS3rf2nrxbQrxGAeLVl5cSC1FfnSW4I68BM9HOOZ+tadOSlh8YZiLK8 NK1IWJHkPouy2cb4EiD0uMPFD3ggvDFiSBWTN4FbA4Vc0aQf3sggwpe4hD9chGotMxpm 7asmVIuBV5i2c6YMZqptabKFW37+U1UWEEFOLZslQ6AVM0Pe/i6Ar3BSUj+agk+uH/6Y qD5A== 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=QGp8LZqdHUD4WPy9qUDqCI+s5pCzQewV7sAhs7iLNS8=; b=rgpSaFA7OfYtY6mOWHB/pyp3d1Bb+zbfYmoSDz3GQCq+pZr3NkuRHLNYre18YCAy6n pCvg2aKzkKMsJ0nUAhuIO8vEEZJrrQ0oNpn+j5q4rdD7ApBXuoeukkagTwOSdBZmujFE K+/KQntyCe5Id8YWgv0vHVdGPUUgvznWq+MPhTxJzuSukqAKbwjnUpmAcq1UOSZvY2sI NEgolzFTXvXVtOXIKCK5BS8M0AMX56NMg5ba9rGm+bHF8RfTSUJOxpbh83NxmUUkNCzy oDPw/4nH3GAEKxHGJ/s+SsW5k4aV8nNfDgByKocs/P9CgBdB702sZJJBz6m/0FFZ8Uli q2+g== 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=QGp8LZqdHUD4WPy9qUDqCI+s5pCzQewV7sAhs7iLNS8=; b=GxAy/lo13uuwbFFRg54br/DLjAWleNKkkcUt2QYLFv9VNz7IcfS9qWTZ88fTLT2T3F g6pWWHsKdSNw1KhCu3MBDu7290uC6fokZC3/78h7jvMIOqe3gBY+W7BmvJBnrYp5tKjS fFXqedNnI45eC4FKKgtSwyjhhE6KUcr4pT22RFgy9XCVMwNu75AeblltNNRJQp4rLmSG d+fxDkLUwJJra5MbNaee5iuDqJLH4YuTynX0dVP9Yrr9n3MJRXM+8KdrAX7qcsTuYZn8 jJOvRHLWYfLvB2ar701+OzRMKYQFwcRThQpKPANOslpVaGoVJybd/tyQrnQ5a5d0h353 emWg== X-Gm-Message-State: AMke39nXuX2anniTB0dkwA3qKcgrlLDMmYFzg2vmykUGgzymGe1+b55gaIPF/o6gu0dGjw== X-Received: by 10.31.54.206 with SMTP id d197mr5670600vka.21.1487608966865; Mon, 20 Feb 2017 08:42:46 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.157.45.170 with SMTP id g39ls11366681otb.49.gmail; Mon, 20 Feb 2017 08:42:46 -0800 (PST) X-Received: by 10.157.12.1 with SMTP id 1mr1200881otr.2.1487608966178; Mon, 20 Feb 2017 08:42:46 -0800 (PST) In-Reply-To: <7552b5b4-e778-46a2-a6f8-fabca5b16dc4@isocpp.org> X-Original-Sender: rodrigojose690@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:30994 Archived-At: ------=_Part_1000_1122804971.1487608965677 Content-Type: multipart/alternative; boundary="----=_Part_1001_462247335.1487608965677" ------=_Part_1001_462247335.1487608965677 Content-Type: text/plain; charset=UTF-8 I think make ostringstream better is the solution Em segunda-feira, 20 de fevereiro de 2017 12:55:03 UTC-3, Olaf van der Spek escreveu: > > Hi, > > One frequently needs to append stuff to strings, but the standard way (s > += "A" + "B" + to_string(42)) isn't optimal due to temporaries. Operator<< > for std::string seems like the obvious solution. It could support > string_view, integers, maybe floats but without formatting options.. It's > trivially extensible. > > s << "A" << "B" << 42; > > Would this be useful for the C++ std lib? > > -- 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/bf963a02-a82d-4c0b-b0e7-1bddc9f0e6cc%40isocpp.org. ------=_Part_1001_462247335.1487608965677 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

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