220 12511 article Path: news.gmane.org!not-for-mail From: Johannes Schaub Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Placeholder literals Date: Mon, 25 Aug 2014 20:49:56 +0200 Lines: 26 Approved: news@gmane.org Message-ID: References: <570663A9-F617-442F-9B48-5B6E7311AE72@gmail.com> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Trace: ger.gmane.org 1408992606 19241 80.91.229.3 (25 Aug 2014 18:50:06 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 25 Aug 2014 18:50:06 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCQPNCEZSQNBBVMK52PQKGQEKEW5KYY@isocpp.org Mon Aug 25 20:50:01 2014 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-oi0-f72.google.com ([209.85.218.72]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1XLzL4-0004XU-T9 for gclcip-std-proposals@m.gmane.org; Mon, 25 Aug 2014 20:49:59 +0200 Original-Received: by mail-oi0-f72.google.com with SMTP id a141sf71441314oig.3 for ; Mon, 25 Aug 2014 11:49:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20120113; h=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:list-post:list-help:list-archive :list-subscribe:list-unsubscribe:content-type; bh=ps2li+1T7a2ABzJbVpsajDAFO/q66HFolqEqbmIy0Ko=; b=NKGfxL+ug7auJw8ueON4PalhZ5V/i62P+yNUx1Hp8PvCFqERxjNYkAy8ZWPOq9/Sbr a+uMqOmnn4aEqnBZilhFUG32XPDvbwSVtriu/jKBIyDmT/bFU54zWNKJW3FbdkZ+tXJW MXSvGBDpLaX4l3N2oaUfWwmP2FJjGnLuEkSQRhvSHhhI2su8HF0qDF7WSiVcOaOY3hY6 KjUOL1bti+Ms8YREmaK+dmMVOHudIUbsRjEzSFcfQw89y882zwgUntdQ4WEVNcbI7evm NR7rdPiwxH0BqNiYWwX07JEO4R8M4QwSwZ4MaNd3dhAslQ8hl1Tn6rFrH95sUhMueM+a 1mrA== 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:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:list-post:list-help:list-archive:list-subscribe :list-unsubscribe:content-type; bh=ps2li+1T7a2ABzJbVpsajDAFO/q66HFolqEqbmIy0Ko=; b=RWGwxxlNMxR4VFEzZbxNM62Oj10iclsUKEgFL90k0ZI2SZtTA6QKYo1kr53eyob6b4 yQmVaS6wh23Fns4PhBzAvOA+S0WrnPQp64haH4RTjCMtKISXuJPcQ9Di2RZjCGjU6JJ9 TA7k1eM3ifJsQt/FGEAvWZJpPreFjp7lUjzjjS2+IwrSdegIzXwSxweCOVxjXg7MkL0D EO0f7CkuUVocY5+U9BJaS8zHSFrb/erab7CWiUC3V5UoyUs7TI+F/TzUNSHemeM4gK2s mmK7aAYDu4VdFOvuMjOG0qEUYdngfmsHdZUnZnPdd8AThMebbXyVZEaaF/e5rLM1tirK w22A== X-Gm-Message-State: ALoCoQkz0OO+fBkZvmey7XisJ/FtV15dk0dpQSmhM55nxy/FdrmQ3eqQ0aXknG89sBTFacuWoJ3n X-Received: by 10.43.28.197 with SMTP id rv5mr16454182icb.23.1408992597819; Mon, 25 Aug 2014 11:49:57 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.50.62.19 with SMTP id u19ls1556458igr.34.gmail; Mon, 25 Aug 2014 11:49:56 -0700 (PDT) X-Received: by 10.42.48.197 with SMTP id t5mr25811784icf.11.1408992596606; Mon, 25 Aug 2014 11:49:56 -0700 (PDT) Original-Received: from mail-ie0-x235.google.com (mail-ie0-x235.google.com [2607:f8b0:4001:c03::235]) by mx.google.com with ESMTPS id m15si799890igt.38.2014.08.25.11.49.56 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 25 Aug 2014 11:49:56 -0700 (PDT) Received-SPF: pass (google.com: domain of schaub.johannes@googlemail.com designates 2607:f8b0:4001:c03::235 as permitted sender) client-ip=2607:f8b0:4001:c03::235; Original-Received: by mail-ie0-f181.google.com with SMTP id rp18so9851879iec.26 for ; Mon, 25 Aug 2014 11:49:56 -0700 (PDT) X-Received: by 10.50.32.2 with SMTP id e2mr16978610igi.33.1408992596419; Mon, 25 Aug 2014 11:49:56 -0700 (PDT) Original-Received: by 10.107.152.8 with HTTP; Mon, 25 Aug 2014 11:49:56 -0700 (PDT) In-Reply-To: <570663A9-F617-442F-9B48-5B6E7311AE72@gmail.com> X-Original-Sender: schaub.johannes@googlemail.com X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of schaub.johannes@googlemail.com designates 2607:f8b0:4001:c03::235 as permitted sender) smtp.mail=schaub.johannes@googlemail.com; dkim=pass header.i=@googlemail.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:12511 Archived-At: 2014-08-24 3:21 GMT+02:00 David Krauss : > Why not add literal operator templates returning placeholders? > > Compare: > std::placeholders::_1 // old > 1param // new > > Would it cause a problem to add it in the global namespace with no leading > underscore? This saves the user a using directive and the name operator "" > param is reserved to the language anyway. It should still be an ordinary > part of the language, declared by . > > The name needs to be bikeshedded. > I think I have an excellent idea. Let us just reverse the order and call it "1_". Then add 'operator "" _'. Reserve that "name". -- --- 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/. .