220 8140 article Path: news.gmane.org!not-for-mail From: Zhihao Yuan Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: A compile-time string literal library type Date: Mon, 16 Dec 2013 10:44:22 -0500 Lines: 30 Approved: news@gmane.org Message-ID: References: <52AE9F22.1070403@gmail.com> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 X-Trace: ger.gmane.org 1387208670 29194 80.91.229.3 (16 Dec 2013 15:44:30 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 16 Dec 2013 15:44:30 +0000 (UTC) To: "std-proposals@isocpp.org" Original-X-From: std-proposals+bncBCSKRWMD4EHBBYF7XSKQKGQEKKVZW5I@isocpp.org Mon Dec 16 16:44:37 2013 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-pb0-f70.google.com ([209.85.160.70]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1VsaLT-0003y3-4M for gclcip-std-proposals@m.gmane.org; Mon, 16 Dec 2013 16:44:35 +0100 Original-Received: by mail-pb0-f70.google.com with SMTP id rq2sf16195851pbb.5 for ; Mon, 16 Dec 2013 07:44:34 -0800 (PST) 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:sender: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=heLma/SAtYRbRu7QFEy3U0fpUGq2Or4XJ/7k7WMzCX4=; b=N6YPoH7A3GekcBbdlAEcMfCTyJn+tzMI9hPydbXsHCoSXGAZ3WlugrIAKaHNql33tX SqGAIGhVATPk0ZquyAMt6tHUAAQhGkVEnwif4ykwcvj2H7wh9ouYGyJbBIJLmSiU8cRy kGsJSkOcgq757Q+CTNtoEzaEXOO88KxPMrDU17nN1qkb/jl/ldPNT69hRbkGdY7708Wg mZb87Nnrr7cjijD6CsGRJ05JOBo4B4Gv6dzeCPhUO5Ke+BhfI/gHPW0e5IlXbuZtHtdz gnAIE3lD28c9nkHHFua9Tr8B5OxGTUeFcvo/FMpOJfslRucW1LspXbK7vJoVJvCArG0n e69g== X-Gm-Message-State: ALoCoQmVNh1luvvYbYq25DjAltq/q5IDdNmKy4ryOHCv+vpiDZW9yAOybtC/hMaG/CtkK++UfwwM X-Received: by 10.66.231.74 with SMTP id te10mr10766777pac.16.1387208673821; Mon, 16 Dec 2013 07:44:33 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.49.131.4 with SMTP id oi4ls2014341qeb.76.gmail; Mon, 16 Dec 2013 07:44:32 -0800 (PST) X-Received: by 10.236.88.111 with SMTP id z75mr6909279yhe.84.1387208672753; Mon, 16 Dec 2013 07:44:32 -0800 (PST) Original-Received: from mail-s68.mailgun.info (mail-s68.mailgun.info. [184.173.153.196]) by mx.google.com with ESMTP id 25si13012203yhc.157.2013.12.16.07.44.32 for ; Mon, 16 Dec 2013 07:44:32 -0800 (PST) Received-SPF: pass (google.com: domain of bounce+3f9131.69110-std-proposals=isocpp.org@miator.net designates 184.173.153.196 as permitted sender) client-ip=184.173.153.196; Original-Received: from mail-vc0-f178.google.com (mail-vc0-f178.google.com [209.85.220.178]) by mxa.mailgun.org with ESMTP id 52af1fd7.58d2830-in1; Mon, 16 Dec 2013 15:44:23 -0000 (UTC) Original-Received: by mail-vc0-f178.google.com with SMTP id lh4so3239439vcb.23 for ; Mon, 16 Dec 2013 07:44:23 -0800 (PST) X-Received: by 10.221.51.5 with SMTP id vg5mr2523743vcb.40.1387208663011; Mon, 16 Dec 2013 07:44:23 -0800 (PST) Original-Received: by 10.221.73.199 with HTTP; Mon, 16 Dec 2013 07:44:22 -0800 (PST) In-Reply-To: <52AE9F22.1070403@gmail.com> X-Mailgun-Sid: WyI3MTBkYiIsICJzdGQtcHJvcG9zYWxzQGlzb2NwcC5vcmciLCAiNjkxMTAiXQ== Original-Sender: zy@miator.net X-Original-Sender: zy@miator.net X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of bounce+3f9131.69110-std-proposals=isocpp.org@miator.net designates 184.173.153.196 as permitted sender) smtp.mail=bounce+3f9131.69110-std-proposals=isocpp.org@miator.net; dkim=pass header.i=@miator.net 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:8140 Archived-At: On Mon, Dec 16, 2013 at 1:35 AM, David Krauss wrote: > Right now I'm making due with an imperfect constexpr hash: > [...] > > The ud-string-literal is used directly as a non-type template argument, so > it must have scalar type, which cannot contain more information than a > std::intmax_t, or else be a reference to global, which seemingly cannot be > generated suitably. Another way of looking at this is not the need for > template string arguments, but the need for a non-type template argument > that can uniquely encode arbitrarily much data, and can be returned from a > ud-string-literal function. AFAICS all you are building is a symbol table, then why not ask for a language feature like, a symbol type? Compiler builds symbol table cheaper and nicer then you do :) -- Zhihao Yuan, ID lichray The best way to predict the future is to invent it. ___________________________________________________ 4BSD -- http://4bsd.biz/ -- --- 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/. .