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[213.162.250.24]) by mx.google.com with ESMTPS id d3-v6si960502ljj.22.2018.08.23.23.31.48 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 23 Aug 2018 23:31:48 -0700 (PDT) Received-SPF: pass (google.com: domain of david@westcontrol.com designates 213.162.250.24 as permitted sender) client-ip=213.162.250.24; Original-Received: from localhost (localhost [127.0.0.1]) by mailfilter05.hatteland.com (Postfix) with ESMTP id 54BC5147E6D; Fri, 24 Aug 2018 08:31:48 +0200 (CEST) X-Virus-Scanned: by SpamTitan at hatteland.com Original-Received: from mailfilter05.hatteland.com (localhost [127.0.0.1]) by mailfilter05.hatteland.com (Postfix) with ESMTP id 8216D147E3C; Fri, 24 Aug 2018 08:31:47 +0200 (CEST) Original-Received: from JHSVMHUB01.netsentral.no (unknown [172.21.1.101]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mailfilter05.hatteland.com (Postfix) with ESMTPS id 7E621147E25; Fri, 24 Aug 2018 08:31:47 +0200 (CEST) Original-Received: from [192.168.0.77] (172.21.20.100) by e2010.hatteland.com (172.21.1.25) with Microsoft SMTP Server (TLS) id 14.3.224.2; Fri, 24 Aug 2018 08:31:46 +0200 In-Reply-To: Content-Language: en-GB X-Originating-IP: [172.21.20.100] X-Original-Sender: david@westcontrol.com X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of david@westcontrol.com designates 213.162.250.24 as permitted sender) smtp.mailfrom=david@westcontrol.com Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Spam-Checked-In-Group: std-proposals@isocpp.org 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:39994 Archived-At: On 23/08/2018 19:37, Matthew Woehlke wrote: > On 2018-08-23 13:17, David Brown wrote: >> On 23/08/18 18:44, Matthew Woehlke wrote: >>> If we don't get the optional parts, you might as well modify your >>> compiler to warn you about: >>> >>> =C2=A0=C2=A0 void foo(int x); >>> =C2=A0=C2=A0 foo(/*y=3D*/5); // warning: 'y' !=3D 'x' >>> >>> ...and no language change is required. >> >> I see two disadvantages of that.=C2=A0 One is that it is seriously ugly >> having comments in the middle of a function call - "foo(.y =3D 5)" is ve= ry >> much nicer and neater syntax.=C2=A0 The other is that because there is n= o >> standard, and neither limits nor requirements in what you might have in >> these comments (maybe someone wants to write "foo( /* was 4 in last >> version */ 5);", it would be hard to get it in common use. >> >> But as far as I see it, it is this checking that is the most important >> feature.=C2=A0 It covers the two most vital points - it aids readability= and >> clarity of the code, and it means mistakes are more likely to be caught >> at compile-time.=C2=A0 These are both /good/ things - and IMHO they are = worth >> allowing the syntax "foo(.y =3D 5);" even if you don't get anything else= .. >=20 > I understand what you're saying. I just happen to strongly disagree :-). > (That is, I would agree with the above if you replace "most" with > "least"...) I think we just have a little difference in perspective. You want=20 powerful new features, and increased checking and readability is a free=20 bonus from that. I want increased checking and readability, and new=20 features might be a bonus from the way they are implemented. >=20 > That said, my current vision would give you what you're asking for... > but also overloading and skipping. >=20 > Also, as has been elsewhere discussed, I'm not sure how forwarding would > work without at least some degree of "strong" naming, and I don't see > any proposal getting much traction if it doesn't "solve" forwarding. >=20 We could get /my/ part done without worrying about forwarding... But I agree it is unlikely that the standards would support a named=20 parameter system that doesn't cover a wider range of new functions. --=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. To view this discussion on the web visit https://groups.google.com/a/isocpp= ..org/d/msgid/std-proposals/90defe78-0849-1cbd-3835-bc73160ee829%40westcontr= ol.com. .