220 33803 article Path: news.gmane.org!.POSTED!not-for-mail From: Ville Voutilainen Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: properties? 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[2607:f8b0:400c:c05::22a]) by mx.google.com with ESMTPS id q46si3850690uag.46.2017.08.10.10.38.23 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 10 Aug 2017 10:38:23 -0700 (PDT) Received-SPF: pass (google.com: domain of ville.voutilainen@gmail.com designates 2607:f8b0:400c:c05::22a as permitted sender) client-ip=2607:f8b0:400c:c05::22a; Original-Received: by mail-vk0-x22a.google.com with SMTP id r199so5404106vke.4 for ; Thu, 10 Aug 2017 10:38:23 -0700 (PDT) X-Received: by 10.31.65.151 with SMTP id o145mr7393304vka.208.1502386703425; Thu, 10 Aug 2017 10:38:23 -0700 (PDT) Original-Received: by 10.103.103.65 with HTTP; Thu, 10 Aug 2017 10:38:22 -0700 (PDT) In-Reply-To: <2fe78db2-1a96-4c22-9439-1c12dea4868e@isocpp.org> X-Original-Sender: ville.voutilainen@gmail.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=clmlkrl2; spf=pass (google.com: domain of ville.voutilainen@gmail.com designates 2607:f8b0:400c:c05::22a as permitted sender) smtp.mailfrom=ville.voutilainen@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:33803 Archived-At: On 10 August 2017 at 20:14, Nicol Bolas wrote: > I guess it's more a matter of the fact that it's a very far future thing. > C++20 is highly unlikely to see purely introspective reflection. So the > chance of code generation reflection reaching even C++23 is pretty low. Considering that there's already implementation experience on both introspective reflection and code generation, it's safe to say that that's far from a matter of fact. > If mixins are a good idea for C++, I just don't see a need for us to hold > off until C++23 (at the earliest), just because we think we might be able to > get them via code generation reflection. If it were right around the corner, > that'd be one thing. But when that sort of stuff is still in the > design/research project stage, then let's see if we can solve the problem in > a more direct way. > At least in the meantime. If we'd have a pressing need for mixins, or confidence that we can't get close enough to them via the reflection facilities, that might be plausible. Neither being the case, there's no need to rush into a specific mixin facility. -- 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/CAFk2RUafz5KPRcAhvr7BNEdgxTAsiZidb_pPzgHOvoRXPc6uog%40mail.gmail.com. .