220 40695 article Path: news.gmane.org!.POSTED!not-for-mail From: Bryce Adelstein Lelbach aka wash Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: The need for std::unique_function Date: Tue, 23 Oct 2018 23:59:47 -0700 Lines: 243 Approved: news@gmane.org Message-ID: References: Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="000000000000d929e10578f408ac" X-Trace: blaine.gmane.org 1540364276 26243 195.159.176.226 (24 Oct 2018 06:57:56 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 24 Oct 2018 06:57:56 +0000 (UTC) Cc: Ryan McDougall , Lee Howes , bbudge@fb.com To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCWL3JV7Z4FRB4FQYDPAKGQEBL6V75Y@isocpp.org Wed Oct 24 08:57:51 2018 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-it1-f200.google.com ([209.85.166.200]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1gFD71-0006g2-7I for gclcip-std-proposals@m.gmane.org; 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[209.85.220.41]) by mx.google.com with SMTPS id n16-v6sor1835974iom.133.2018.10.23.23.59.59 for (Google Transport Security); Tue, 23 Oct 2018 23:59:59 -0700 (PDT) Received-SPF: pass (google.com: domain of brycelelbach@gmail.com designates 209.85.220.41 as permitted sender) client-ip=209.85.220.41; X-Received: by 2002:a6b:ed0a:: with SMTP id n10-v6mr5571738iog.106.1540364399354; Tue, 23 Oct 2018 23:59:59 -0700 (PDT) In-Reply-To: X-Original-Sender: brycelelbach@gmail.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=tgCYWV96; spf=pass (google.com: domain of brycelelbach@gmail.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=brycelelbach@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:40695 Archived-At: --000000000000d929e10578f408ac Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable I would be willing to allocate time in LEWGI at San Diego to see this paper, as it's a frequently requested feature. This comes with the caveat I'd like one updated proposal for this, intended for discussion ready for circulation on the LEWG reflector by this Friday. On Tue, Oct 23, 2018, 1:59 PM 'David Krauss' via ISO C++ Standard - Future Proposals wrote: > Hi Ryan, all, > > Thanks for your support! I=E2=80=99m not an active user of C++ and I won= =E2=80=99t be > attending the next conference, but anyone can certainly still ping me. > > Feel free to carry over the P0288 number. The main work to align the P028= 8 > draft with your proposal would be rebasing the standardese onto the IS, > from the current basis of P0045. Most of this can be done by recovering t= he > text from P0288R0. > > The rationale for P0288R1 depending on P0045 was that the shallow-const > issue was spreading to this new class as a virus, so the fix in P0045 > should be applied first to contain the damage. However, two years have > passed with less interest in P0045 (or another deep-const fix; adding dee= p > const does not imply all of P0045). The fixed, dependent version P0288R1 > was never presented =E2=80=94 several volunteers have come forward but th= e extra > complication has been a hindrance. > > We might focus now on building LEWG consensus on the order of > dependencies. We=E2=80=99ve missed 2018 and there=E2=80=99s still plenty = of time before > Kona 2019. If some committee members are serious about deep const as a ha= rd > requirement, then they have ample opportunity to support P0045 or to inve= nt > another solution. Otherwise, everyone should be able to agree on a > standalone unique_function. > > - Best, > David > > > On 2018=E2=80=9310=E2=80=9323, at 7:35 PM, Brian Budge wr= ote: > > David suggested to reach out to Jeffrey Yasskin on LEWG to loop him into > the discussion. > > Get Outlook for Android > > ------------------------------ > *From:* Lee Howes > *Sent:* Tuesday, October 23, 2018 9:57:09 AM > *To:* std-proposals@isocpp.org > *Cc:* Brian Budge > *Subject:* Re: [std-proposals] The need for std::unique_function > > Well that was what I was thinking, but it's really up to you. I'm probabl= y > not the right person to advise on LEWG procedure so I could easily be > giving the wrong advice anyway. > > -- > 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/MW2PR1501MB2= 154FB67DE8B9F102CC016EEA2F50%40MW2PR1501MB2154.namprd15.prod.outlook.com > > . > > > -- > 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/DF91B617-FD3= 2-486E-A5B4-65AB33809C5B%40me.com > > . > --=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/CAP3wax9WPkgz5_E1iS_bJf5HD69Qf17XqYRYxX%3DzXHOfp= AcK-g%40mail.gmail.com. --000000000000d929e10578f408ac Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
I would be willing to allocate time in LEWGI at San = Diego to see this paper, as it's a frequently requested feature.

This comes with the caveat I'd l= ike one updated proposal for this, intended for discussion ready for circul= ation on the LEWG reflector by this Friday.


On Tue, Oct 23, 2018, 1:5= 9 PM 'David Krauss' via ISO C++ Standard - Future Proposals <std-proposals@isocpp.org> w= rote:
Hi Ryan, all,

Thanks for your support! I=E2=80=99= m not an active user of C++ and I won=E2=80=99t be attending the next confe= rence, but anyone can certainly still ping me.

Fee= l free to carry over the P0288 number. The main work to align the P0288 dra= ft with your proposal would be rebasing the standardese onto the IS, from t= he current basis of P0045. Most of this can be done by recovering the text = from P0288R0.

The rationale for P0288R1 depending = on P0045 was that the shallow-const issue was spreading to this new class a= s a virus, so the fix in P0045 should be applied first to contain the damag= e. However, two years have passed with less interest in P0045 (or another d= eep-const fix; adding deep const does not imply all of P0045). The fixed, d= ependent version P0288R1 was never presented =E2=80=94 several volunteers h= ave come forward but the extra complication has been a hindrance.

We might focus now on building LEWG consensus on the order = of dependencies. We=E2=80=99ve missed 2018 and there=E2=80=99s still plenty= of time before Kona 2019. If some committee members are serious about deep= const as a hard requirement, then they have ample opportunity to support P= 0045 or to invent another solution. Otherwise, everyone should be able to a= gree on a standalone unique_function.

- Best,
David=


On 2018= =E2=80=9310=E2=80=9323, at 7:35 PM, Brian Budge <bbudge@fb.com> wrote:=

David suggested to reach out to Jeffrey Yasskin on LEWG to loop him into th= e discussion.

From: Lee Howes <xrik= cus@gmail.com>
Sent: Tuesday, October 23, 2018 9:57:09 AM
To: std-proposals@isocpp.org
Cc: Brian Budge
Subject: Re: [std-proposals] The need for std::unique_function
=C2=A0
Well that was what I was thinking, but it's really up = to you. I'm probably not the right person to advise on LEWG procedure s= o I could easily be giving the wrong advice anyway.

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