220 24978 article Path: news.gmane.org!not-for-mail From: Lawrence Crowl Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Any purposes for $, @, or ` ? 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[2607:f8b0:4002:c05::230]) by mx.google.com with ESMTPS id f206si2805813ybf.88.2016.03.05.10.44.36 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 05 Mar 2016 10:44:36 -0800 (PST) Received-SPF: pass (google.com: domain of lawrence.crowl@gmail.com designates 2607:f8b0:4002:c05::230 as permitted sender) client-ip=2607:f8b0:4002:c05::230; Original-Received: by mail-yw0-x230.google.com with SMTP id g3so12375405ywa.3 for ; Sat, 05 Mar 2016 10:44:36 -0800 (PST) X-Received: by 10.129.82.15 with SMTP id g15mr8351581ywb.344.1457203475905; Sat, 05 Mar 2016 10:44:35 -0800 (PST) Original-Sender: lawrence.crowl@gmail.com Original-Received: by 10.37.214.208 with HTTP; Sat, 5 Mar 2016 10:44:35 -0800 (PST) In-Reply-To: X-Original-Sender: Lawrence@Crowl.org X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of lawrence.crowl@gmail.com designates 2607:f8b0:4002:c05::230 as permitted sender) smtp.mailfrom=lawrence.crowl@gmail.com; dkim=pass header.i=@gmail.com Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Spam-Checked-In-Group: std-proposals@isocpp.org X-Google-Group-Id: 399137483710 List-Post: , List-Help: , List-Archive: List-Subscribe: , List-Unsubscribe: , Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:24978 Archived-At: On 3/5/16, Andrew Tomazos wrote: > On Sat, Mar 5, 2016 at 5:55 PM, Lawrence Crowl wrote: >> On 2/27/16, NDos Dannyu wrote: >>> These three characters are not part of the basic source character set, >>> even though they are graphic ASCII characters. >>> Any purposes for them? >> >> Some operating systems use '$' in identifiers. Compilers sometimes have >> an option to allow '$' in identifiers. >> >> The '@' and '`' characters are used for extension languages. > > I don't follow this. To which extension languages are you referring? There is Objective C++ using '@'. I have written private extensions using '`'. In one case, I ended up having to use both '@' and '`' because of multiple processing stages. >> That is >> you have a language that uses them much like the preprocessor uses '#' >> to find out where in the program text it should pay attention to them. >> >> The use of these characters in C++ would have negative consequences. -- Lawrence Crowl -- 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. 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