220 37895 <2d519188-69b6-434d-9573-9875a7806f05@isocpp.org> article Path: news.gmane.org!.POSTED!not-for-mail From: inkwizytoryankes@gmail.com Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: API versioning: functions: overload; classes: typedef; variables: Date: Fri, 20 Apr 2018 05:25:26 -0700 (PDT) Lines: 214 Approved: news@gmane.org Message-ID: <2d519188-69b6-434d-9573-9875a7806f05@isocpp.org> References: <2e63ae60069efc0fb81610ac2bd35491@kdab.com> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_8494_1913778706.1524227126613" X-Trace: blaine.gmane.org 1524227003 27133 195.159.176.226 (20 Apr 2018 12:23:23 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 20 Apr 2018 12:23:23 +0000 (UTC) To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBDDLTAGNTIBBBN5Y47LAKGQE2ZNW3KI@isocpp.org Fri Apr 20 14:23:19 2018 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-vk0-f70.google.com ([209.85.213.70]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1f9V4P-0006wZ-Mi for gclcip-std-proposals@m.gmane.org; Fri, 20 Apr 2018 14:23:17 +0200 Original-Received: by mail-vk0-f70.google.com with SMTP id z78sf5486400vkd.14 for ; Fri, 20 Apr 2018 05:25:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=date:from:to: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=eUn1yOue3P6V/i4aA/zW8Y9PlUOuA33DlM85C2+vHzE=; b=Y4XeoaMJjRnMmI7q5knwrITlsO88R/Hr+koE/vdLxb2dEacJW8sU+Dvd+Vu5A4ic1n 45dYM0c4Adsz5wdnWCWRNrUFoDLEuNct+epbYyn7q3MU/LiLPPaaP78TjV73habKdIOw BwXIRb+NlqHRaz8Ed0+mPfIE4sdP/hhBVatL/ovQ6MuC5cho0HNTtLYNYikcorMj3Z2+ 1vVuRv06tBb/KqwN7TwNWqlHOg/B6RNQlMew0zt5oBVNRipm0UPdkGFBdB4nWOkwHwJC QpZvegn/9gbVH3Gou8qVpVWCf8uB8nbGXv5PkQrabpETyI8sm1gpoUE3KWT3u3lvDXDM i03A== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to: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=eUn1yOue3P6V/i4aA/zW8Y9PlUOuA33DlM85C2+vHzE=; b=F3pZ2DVejCXVvWmv6ppSPLUnZYWluNRg8Z+6/EsytRYDKCTKZivhz/8aX6bIj1+GEH 5yXTufybGnEkOiIvROK1k/iglBUf5aj6xrYYfe1jR94uS5HSIVMlNsZ/QkQN3HPtjOm8 gAEwTOY2kyolex6BNyIFumMyH6aFMXmjknS7kUmmKRlHyWwkcdkHQtAxXtrq3SLH+8ja AGDsIRE//A5JcgWXwgE1EtdGvNEt0M7IxctVpeRRWOf4B1SlDmSIF8U0cnCf86CaFLWD LLlyQH+cO+bqEahHDqCRUlLFu/yEa/9J0WQiJ2nqs2wLNZmQ7pC938rDbyQYjXwzY98t LnuQ== 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: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=eUn1yOue3P6V/i4aA/zW8Y9PlUOuA33DlM85C2+vHzE=; b=XuHi4DtcMdLY7xmiFt6fwnd/ru5N7krVJbgllICEOYgQXxtt8wVjOZLGOvnSLVy6Xp JBVgTZ/Os9tx67ub0k0v7tD8zPFKTF2395iYeg39S79DAN46U387489blxbK+Xt2Dcaj M8P3X8kOq/l3VG84fIWtnQMFeQbCcpKzPEv53JRoL4ZR3TP5h4pZQGoofgXhKzYZACb9 6yAYAWB453WQMwULF8yNhSDAcuIWoLqXK9Iphw1jst1BwQ1KqGJzI3rav6l9O6h2uAmq zxB8aQUOiVVam20PJXvy1v7OXLMLX6gxOqO8mLlwBh/tiJkIuDpJoimch7qJ6Tr4R1Pa 5Xjg== X-Gm-Message-State: ALQs6tA+SFXxykfaiAoSDz1BmhBgdOcb0xiCXZ4lVNGFVb1y56o7omMs YG/r7UYU99p9RHiIQIibkJqwjg== X-Google-Smtp-Source: AIpwx4+xQf8sD12BR1cO8Ef7Kzak3V7XxE3WRsHsmg9lrjET//m/B0weJEHZ5TPSMJv5OiSL1R/Aow== X-Received: by 10.31.66.11 with SMTP id p11mr4844940vka.122.1524227128153; Fri, 20 Apr 2018 05:25:28 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.31.48.81 with SMTP id w78ls5101039vkw.19.gmail; Fri, 20 Apr 2018 05:25:27 -0700 (PDT) X-Received: by 10.31.52.139 with SMTP id b133mr1156764vka.10.1524227127140; Fri, 20 Apr 2018 05:25:27 -0700 (PDT) In-Reply-To: X-Original-Sender: inkwizytoryankes@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:37895 Archived-At: ------=_Part_8494_1913778706.1524227126613 Content-Type: multipart/alternative; boundary="----=_Part_8495_159283060.1524227126613" ------=_Part_8495_159283060.1524227126613 Content-Type: text/plain; charset="UTF-8" On Friday, April 20, 2018 at 9:44:46 AM UTC+2, Ville Voutilainen wrote: > > On 20 April 2018 at 10:40, Mutz, Marc > > wrote: > > Hi, > > > > This is an idea about API migration. Assume you have a public API, and > you > > discover that you made a typo in an identifier (there are tons of other > > reasons to use the mechanisms that I'll show, but let's stay with typo > for > > the sake of argument). How to fix? > > > > For functions, we can add a new function and deprecated the old: > > > > // v1 > > bar make_bra(); > > > > // v2 > > [[deprecated("use make_bar()")]] bar make_bra() { return make_bar(); > } > > bar make_bar(); > > > > For classes, we can use a typedef: > > > > // v1 > > class bra { ~~~ }; > > > > // v2 > > class bar { ~~~ }; > > [[deprecated("use bar")]] using bra = bar; > > > > For variables, there's no way: > > > > // v1 > > static inline bar my_bra; // oops! no source migration path :( > > > > I have two questions: > > > > 1. Is there anything in the pipeline that would address migrating > variable > > names? > > 2. Assuming there's nothing, what about overloading the using keyword > for > > this? > > > See http://open-std.org/JTC1/SC22/WG21/docs/papers/2018/p0945r0.html > We're going to review it in Rapperswil. > I have case: class F { using ThisType = F; ThisType() { } ~ThisType() { } }; I will be allowed? Or it still special case that can't be changed? -- 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/2d519188-69b6-434d-9573-9875a7806f05%40isocpp.org. ------=_Part_8495_159283060.1524227126613 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


On Friday, April 20, 2018 at 9:44:46 AM UTC+2, Vil= le Voutilainen wrote:
On 20 Apr= il 2018 at 10:40, Mutz, Marc <ma...@kdab.com> wrote:
> Hi,
>
> This is an idea about API migration. Assume you have a public API,= and you
> discover that you made a typo in an identifier (there are tons of = other
> reasons to use the mechanisms that I'll show, but let's st= ay with typo for
> the sake of argument). How to fix?
>
> For functions, we can add a new function and deprecated the old:
>
> =C2=A0 =C2=A0// v1
> =C2=A0 =C2=A0bar make_bra();
>
> =C2=A0 =C2=A0// v2
> =C2=A0 =C2=A0[[deprecated("use make_bar()")]] bar make_b= ra() { return make_bar(); }
> =C2=A0 =C2=A0bar make_bar();
>
> For classes, we can use a typedef:
>
> =C2=A0 =C2=A0// v1
> =C2=A0 =C2=A0class bra { ~~~ };
>
> =C2=A0 =C2=A0// v2
> =C2=A0 =C2=A0class bar { ~~~ };
> =C2=A0 =C2=A0[[deprecated("use bar")]] using bra =3D bar= ;
>
> For variables, there's no way:
>
> =C2=A0 =C2=A0 // v1
> =C2=A0 =C2=A0 static inline bar my_bra; // oops! no source migrati= on path :(
>
> I have two questions:
>
> 1. Is there anything in the pipeline that would address migrating = variable
> names?
> 2. Assuming there's nothing, what about overloading the using = keyword for
> this?


See http://open-= std.org/JTC1/SC22/WG21/docs/papers/2018/p0945r0.html
We're going to review it in Rapperswil.

I have case:

class= F
{
=C2=A0 =C2=A0using ThisType =3D F;
=C2=A0 =C2=A0ThisType()
=C2=A0 =C2=A0{

=C2=A0 =C2=A0= }
=C2=A0 =C2=A0~ThisType()
=C2=A0 =C2=A0{

=C2=A0 =C2=A0}
};
I will be allowed? Or it still spec= ial case that can't be changed?
=C2=A0

--
You received this message because you are subscribed to the Google Groups &= quot;ISO C++ Standard - Future Proposals" group.
To unsubscribe from this group and stop receiving emails from it, send an e= mail to std-proposa= ls+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/2d519188-69b6-434d-9573-9875a7806f05= %40isocpp.org.
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