220 18303 article Path: news.gmane.org!not-for-mail From: "dgutson ." Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: to_string(string) Date: Fri, 29 May 2015 14:23:19 -0300 Lines: 75 Approved: news@gmane.org Message-ID: References: Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1432920203 31562 80.91.229.3 (29 May 2015 17:23:23 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 29 May 2015 17:23:23 +0000 (UTC) To: std-proposals Original-X-From: std-proposals+bncBDE3NBMV6UFBBB6BUKVQKGQEQXXN6TQ@isocpp.org Fri May 29 19:23:22 2015 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-yk0-f200.google.com ([209.85.160.200]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1YyO09-0005fg-7I for gclcip-std-proposals@m.gmane.org; Fri, 29 May 2015 19:23:21 +0200 Original-Received: by ykfl8 with SMTP id l8sf55158560ykf.0 for ; Fri, 29 May 2015 10:23:20 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:content-type:content-transfer-encoding :x-original-sender:x-original-authentication-results:reply-to :precedence:mailing-list:list-id:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=8C3hO8ygVbfpdkBAdcjwKbu1j+9ue/tGfQn3MJfODTo=; b=FQeBj8WdVokiQgq9W3sdAZW/kjZ87BLKhUZWmZbbwWBRL2NUNI43RCoFbLbQjYftoe jIqIlcVX4iC8TFTZ91wuglXwIexWg7Niu1ku3UCDz0egAOwkzkILl6Fo+7chdy28TBEJ rSCBq6VlHlH+sxrvuvCJepy5h+eu9Lo+ShLCfwpQagwS7ESpG3mE67hPnwT8TliAfsIi RzTHVijh1pZZ3t3BdtyvCcHZIgz0clxpEe62LoTq5WRoiK9cAeGq6E0FSKoJ/UJxOGwJ sEes4KCDmuCZnMIPHCbe6Y0o6FGwLxyrU2SBAxhxZ+jGfUi7KS3oeoQFgQqJWoRMB7u6 LT/g== X-Gm-Message-State: ALoCoQlUZBxy0sjEp5G5o6Eswjpq5WiCbWXcz+utXF80xGJD6xxv9S3sMHqrPHGnliaTkDHE5y87 X-Received: by 10.236.11.114 with SMTP id 78mr11087040yhw.22.1432920199990; Fri, 29 May 2015 10:23:19 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.140.86.149 with SMTP id p21ls1548186qgd.34.gmail; Fri, 29 May 2015 10:23:19 -0700 (PDT) X-Received: by 10.170.110.79 with SMTP id c76mr10728710ykb.108.1432920199279; Fri, 29 May 2015 10:23:19 -0700 (PDT) Original-Received: from mail-yh0-x230.google.com (mail-yh0-x230.google.com. [2607:f8b0:4002:c01::230]) by mx.google.com with ESMTPS id f66si3696475yka.27.2015.05.29.10.23.19 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 29 May 2015 10:23:19 -0700 (PDT) Received-SPF: pass (google.com: domain of danielgutson@gmail.com designates 2607:f8b0:4002:c01::230 as permitted sender) client-ip=2607:f8b0:4002:c01::230; Original-Received: by yhom41 with SMTP id m41so21123265yho.1 for ; Fri, 29 May 2015 10:23:19 -0700 (PDT) X-Received: by 10.170.81.87 with SMTP id x84mr10750069ykx.113.1432920199169; Fri, 29 May 2015 10:23:19 -0700 (PDT) Original-Received: by 10.129.90.213 with HTTP; Fri, 29 May 2015 10:23:19 -0700 (PDT) In-Reply-To: X-Original-Sender: danielgutson@gmail.com X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of danielgutson@gmail.com designates 2607:f8b0:4002:c01::230 as permitted sender) smtp.mail=danielgutson@gmail.com; dkim=pass header.i=@gmail.com; dmarc=pass (p=NONE dis=NONE) header.from=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:18303 Archived-At: On Fri, May 29, 2015 at 2:13 PM, Nevin Liber wrote= : > On 29 May 2015 at 12:06, dgutson . wrote: >> >> Is there any reason for the lack of an overloaded version of to_string >> receiving a string? (in which case would work as the identity) >> This is useful when the argument is a template argument. >> For example: >> >> template >> void f(T t) >> { >> auto x =3D "Hello " + std::to_string(t); >> } >> >> then call it with t=3D1, t=3D"World", etc. >> >> Sorry if I'm missing something too obvious. > > > Perhaps to avoid an unintentional copy? It shouldn't be necessary if the argument is const string& and the return type is also const reference. (the following snippet works for me: namespace std { const string& to_string(const string& x) { return x; } } ) > > No real idea why, though. > Nevin :-) > -- > Nevin ":-)" Liber (847) 691-1404 > > -- > > --- > 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. > Visit this group at > http://groups.google.com/a/isocpp.org/group/std-proposals/. --=20 Who=E2=80=99s got the sweetest disposition? One guess, that=E2=80=99s who? Who=E2=80=99d never, ever start an argument? Who never shows a bit of temperament? Who's never wrong but always right? Who'd never dream of starting a fight? Who get stuck with all the bad luck? --=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/. .