220 41362 article Path: news.gmane.org!.POSTED!not-for-mail From: Jake Arkinstall Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: methods templates Date: Sat, 19 Jan 2019 13:56:42 +0000 Lines: 218 Approved: news@gmane.org Message-ID: References: <711b31b3-de8f-462a-ac03-780bd2f5e4f4@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: ciao.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="00000000000009ae87057fd00093" X-Trace: ciao.gmane.org 1547906656 14699 195.159.176.228 (19 Jan 2019 14:04:16 GMT) X-Complaints-To: usenet@ciao.gmane.org NNTP-Posting-Date: Sat, 19 Jan 2019 14:04:16 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBDCZX3WUUQFRBJWZRTRAKGQEJ52WQMY@isocpp.org Sat Jan 19 15:04:10 2019 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-it1-f198.google.com ([209.85.166.198]) by ciao.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.84_2) (envelope-from ) id 1gkrEE-0003nJ-O8 for gclcip-std-proposals@m.gmane.org; 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[209.85.220.41]) by mx.google.com with SMTPS id j79sor17619306jad.11.2019.01.19.05.56.54 for (Google Transport Security); Sat, 19 Jan 2019 05:56:54 -0800 (PST) Received-SPF: pass (google.com: domain of jake.arkinstall@gmail.com designates 209.85.220.41 as permitted sender) client-ip=209.85.220.41; X-Received: by 2002:a02:284:: with SMTP id 126mr13614002jau.47.1547906214111; Sat, 19 Jan 2019 05:56:54 -0800 (PST) In-Reply-To: <711b31b3-de8f-462a-ac03-780bd2f5e4f4@isocpp.org> X-Original-Sender: jake.arkinstall@gmail.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=qd6TJKZd; spf=pass (google.com: domain of jake.arkinstall@gmail.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=jake.arkinstall@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=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:41362 Archived-At: --00000000000009ae87057fd00093 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable A common approach to this is to use a struct to wrap the functions in. I'd much prefer to be able to wrap a template around a namespace, but that isn't a popular idea. In honesty, I'd like something that sits in the middle of the ideas of structs and namespaces - something used specifically for compile time logic and type traits. The use of structs used strictly for sfinae logic, for example, is nothing but a bodge IMO, and I'd like to be able to use a "using" declaration to access methods in the current scope. Just my 2=C2=A2. On Sat, 19 Jan 2019, 13:47 In a C ++ class when you have a lot of methods templates with the same > types, you have lot of redundant information. > for example : > > class Foo > { > public : > > template > void meth1(T t); > > template > void meth2(T t); > > template > void meth3(T t,, U u); > }: > > Could not imagine something like this : > > class Foo > { > public : > > methods > { > void meth1(T t); > > void meth2(T t); > > template > void meth3(T t,, U u); > }: > }: > > What do you think about this ? > Is there a proposal that goes in this direction ? > Problems with parser (compiler front end , Doxygen =E2=80=A6) ? > > Regards, > > Philippe Ballereau > > -- > 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/711b31b3-de8= f-462a-ac03-780bd2f5e4f4%40isocpp.org > > . > --=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/CAC%2B0CCOHKVM9FYQVYtC8mqf3P1%2BmnhykR63YkwrXptL= TSx%3DcDg%40mail.gmail.com. --00000000000009ae87057fd00093 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
A common approach to this is to use a struct to wrap the = functions in. I'd much prefer to be able to wrap a template around a na= mespace, but that isn't a popular idea.

In honesty, I'd like something that sits in the middle of= the ideas of structs and namespaces - something used specifically for comp= ile time logic and type traits. The use of structs used strictly for sfinae= logic, for example, is nothing but a bodge IMO, and I'd like to be abl= e to use a "using" declaration to access methods in the current s= cope.

Just my 2=C2=A2.

On Sat, 19 Jan 20= 19, 13:47 <philippe.balle= reau@free.fr wrote:
In a C ++ class when you have a lot of methods templates with th= e same types, you have lot of redundant information.
for example = :

class Foo=C2=A0
{
public :

=C2=A0 =C2=A0=C2=A0 template <typename T>
=C2=A0 =C2=A0=C2=A0 void meth1(T t);

= =C2=A0 =C2=A0=C2=A0 template <typename T>
=C2=A0 =C2=A0=C2= =A0 void meth2(T t);

=C2=A0 =C2=A0 template <typename T, typen= ame U>
=C2=A0 =C2=A0 void meth3(T t,, U u);
}:

Could not imagine something like this :
=

class Foo=C2=A0
{
public :

=C2=A0 =C2=A0 =C2=A0 methods <typename T>=C2=A0=
=C2=A0 =C2=A0 =C2=A0 {
=C2=A0 =C2=A0 =C2=A0 =C2=A0=C2= =A0 void meth1(T t);

=C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0 void meth2(T t);

=C2=A0 =C2=A0 = =C2=A0 =C2=A0=C2=A0 template=C2=A0 <typename U>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 void meth3(T t,, U u);
=C2=A0 =C2=A0 }:
}:

What do you think about this ?
Is there a= proposal that goes in this direction ?
Problems with parser (com= piler front end , Doxygen =E2=80=A6) ?

Regards,

Philippe Ballereau

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