220 41366 article Path: news.gmane.org!.POSTED!not-for-mail From: philippe.ballereau@free.fr Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: methods templates Date: Sun, 20 Jan 2019 09:17:04 -0800 (PST) Lines: 182 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/mixed; boundary="----=_Part_1572_1987225210.1548004624762" X-Trace: ciao.gmane.org 1548004622 231845 195.159.176.228 (20 Jan 2019 17:17:02 GMT) X-Complaints-To: usenet@ciao.gmane.org NNTP-Posting-Date: Sun, 20 Jan 2019 17:17:02 +0000 (UTC) Cc: philippe.ballereau@free.fr To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBCKNXAXCVANBBEO2SLRAKGQET55PXUI@isocpp.org Sun Jan 20 18:17:00 2019 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-yb1-f197.google.com ([209.85.219.197]) by ciao.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.84_2) (envelope-from ) id 1glGiQ-000yCx-9l for gclcip-std-proposals@m.gmane.org; Sun, 20 Jan 2019 18:16:58 +0100 Original-Received: by mail-yb1-f197.google.com with SMTP id g18sf3524312yba.17 for ; Sun, 20 Jan 2019 09:17:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:message-id:in-reply-to:references:subject :mime-version:x-original-sender:reply-to:precedence:mailing-list :list-id:list-post:list-help:list-archive:list-subscribe :list-unsubscribe; bh=9LXfwnrk2H539V8g+DtH+ecDNIT6I9A9LqyeXVGWSP0=; b=dCaFH3foEQTTTzrqx+YzjmJSHn5moGN4L/P8zejys9q7FfWLhyu/pMGAZ9t64GQpZh AQeYL0Wn7YuVybxceIhU08dabUjvIw/MS1Wa2y0QK1HBh5kU1niznaV+WcOkx5u9t5OI PIZaTStx1qOSxuizgQWD8x39mp3k0g40/DUKjqJXOYYLzM5UbYHxLge6FbUm80T5T8MF A8ixMA2pnPxALyM6Hu3FHAXJmWTX/VMUQ6mkx6aFMC7q1c6qluS7tG9CS9tbyeMhf1M8 3JVHPiwMK0sCDsj6IzYj+ATaxScctha0TNJMTa4Tb2dp79SaDuiDH/Zzdvus229h7O5w dUpQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:message-id:in-reply-to :references:subject:mime-version:x-original-sender:reply-to :precedence:mailing-list:list-id:x-spam-checked-in-group:list-post :list-help:list-archive:list-subscribe:list-unsubscribe; bh=9LXfwnrk2H539V8g+DtH+ecDNIT6I9A9LqyeXVGWSP0=; b=SoRL5TmIFXCvxXFckmz3E49+inS0seRPD7JepwKsUFAbEFjtAZ56h5J+HzKcgd6/Ce KBNJ2dd2UCN8tVd4eOjr00/P8Nzh5VbfOHNwMIosU0EB4fAX/AXv07bv5MjvQfLyXlc9 syZnW+JPg+TDeE/Lu8tuo/f6G1MImOfeWX/pgnKvezZSIWBEGz6HmwWCMyWJbVeGePMu qW1O83fjj8MZJ/yU2OyLGWoUSryzsObtEG0m6farLQSYnznIaMre4Foeddbts/3ECP6C BfTpTJuUaH0O7fSAW1z7kfJTBobMGGs5ts1LaY4jz0zF5ofbxJPMc2Xd8Lv1IXdbbwFl 49FA== X-Gm-Message-State: AJcUukdQNzZsym5Lv/Iqr2NLD7RKZrMYleoB01Qe7FkxbedDAlZvbhOZ MZgbrVf0J8nNhcjserEU8cFBUA== X-Google-Smtp-Source: ALg8bN59RCkGSWm7LrvU+4mUkmcMHMcWX8U8i/qAQXDMer5XMlbwudI/IZWKBdT1FcSbTm7TFPAmIA== X-Received: by 2002:a81:4642:: with SMTP id t63mr13480774ywa.21.1548004626820; Sun, 20 Jan 2019 09:17:06 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 2002:a25:c042:: with SMTP id c63ls1431885ybf.4.gmail; Sun, 20 Jan 2019 09:17:05 -0800 (PST) X-Received: by 2002:a25:dc92:: with SMTP id y140mr202559ybe.5.1548004625445; Sun, 20 Jan 2019 09:17:05 -0800 (PST) In-Reply-To: <711b31b3-de8f-462a-ac03-780bd2f5e4f4@isocpp.org> X-Original-Sender: philippe.ballereau@free.fr 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:41366 Archived-At: ------=_Part_1572_1987225210.1548004624762 Content-Type: multipart/alternative; boundary="----=_Part_1573_641320824.1548004624762" ------=_Part_1573_641320824.1548004624762 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Le samedi 19 janvier 2019 14:47:19 UTC+1, philippe....@free.fr a =C3=A9crit= : > > In a C ++ class when you have a lot of methods templates with the same=20 > types, you have lot of redundant information. > for example : > > class Foo=20 > { > 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=20 > { > public : > > methods =20 > { > 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 > Yes this will be a solution, but the syntax template is more rich than the keyword auto. It is also why it seems to me that the template syntax will return for=20 lambdas. --=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/dc35ab69-d2a6-4e03-a776-75d6f94a08d4%40isocpp.or= g. ------=_Part_1573_641320824.1548004624762 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


Le samedi 19 janvier 2019 14:47:19 UTC+1, philippe= .....@free.fr a =C3=A9crit=C2=A0:
In a C ++ class when you have a lot of methods temp= lates with the same types, you have lot of redundant information.
for example :

class Foo=C2=A0
{
public :

=C2=A0 =C2=A0=C2=A0 template <typen= ame 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 <type= name T, typename 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 <typenam= e 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 wi= th parser (compiler front end , Doxygen =E2=80=A6) ?

Regards,

Philippe Ballereau

Yes this will be a solution,
=C2=A0but t= he syntax template=C2=A0 is more rich than the keyword auto.
It i= s also why it seems to me that the template syntax will return for lambdas.=

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To view this discussion on the web visit https://groups.google.= com/a/isocpp.org/d/msgid/std-proposals/dc35ab69-d2a6-4e03-a776-75d6f94a08d4= %40isocpp.org.
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