220 33566 <7ba631a5-c4c5-cd5b-8e80-c583420cfca5@gmail.com> article Path: news.gmane.org!.POSTED!not-for-mail From: Matthew Woehlke Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Add type alias that mirrors given type Date: Thu, 3 Aug 2017 10:38:34 -0400 Lines: 38 Approved: news@gmane.org Message-ID: <7ba631a5-c4c5-cd5b-8e80-c583420cfca5@gmail.com> References: <20f365ce-2a24-4576-894f-923e7b9cd76e@isocpp.org> <03d0948e-506b-4e0b-b5e0-b255d3698cd5@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" X-Trace: blaine.gmane.org 1501772829 8043 195.159.176.226 (3 Aug 2017 15:07:09 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 3 Aug 2017 15:07:09 +0000 (UTC) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 Cc: antonio@perezexcelsior.com To: std-proposals@isocpp.org, Nicol Bolas Original-X-From: std-proposals+bncBC37LBFWUIFBBGHYRTGAKGQEI3BSQFQ@isocpp.org Thu Aug 03 17:07:00 2017 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-it0-f70.google.com ([209.85.214.70]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ddHiG-0001by-8b for gclcip-std-proposals@m.gmane.org; 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[66.194.253.20]) by smtp.googlemail.com with ESMTPSA id r191sm26068423qke.77.2017.08.03.07.38.35 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 03 Aug 2017 07:38:35 -0700 (PDT) Original-Newsgroups: gmane.comp.lang.c++.isocpp.proposals In-Reply-To: <03d0948e-506b-4e0b-b5e0-b255d3698cd5@isocpp.org> Content-Language: en-US X-Original-Sender: mwoehlke.floss@gmail.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.b=RDqxfi0U; spf=pass (google.com: domain of mwoehlke.floss@gmail.com designates 2607:f8b0:400d:c0d::242 as permitted sender) smtp.mailfrom=mwoehlke.floss@gmail.com; dmarc=pass (p=NONE sp=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:33566 Archived-At: On 2017-08-03 09:54, Nicol Bolas wrote: > On Thursday, August 3, 2017 at 9:35:36 AM UTC-4, Matthew Woehlke wrote: >> On 2017-08-02 15:27, Antonio Perez wrote: >>> I propose that a type alias which simply returns the given type >>> be added to the standard library for the purpose of working with >>> types whose syntax is problematic.>>> >>> *What's the use for this?*As an example usage, here is a print function >>> that prints an array of things: >>> >>> template void print(std::typemirror& arr) >> >> Um... >> >> template >> void print(T (&arr)[N]) >> >> ...? >> >> I don't see a motivating use case here... > > I think the motivation here is that that syntax looks *terrible* and quite > a few people have no idea how to type that. Yes, it's esoteric, but if this is the *only* motivation for the feature, IMHO it isn't worth a new library feature. (It's actually not *that* weird, either... function pointers aren't much different...) -- Matthew -- 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/7ba631a5-c4c5-cd5b-8e80-c583420cfca5%40gmail.com. .