220 18012 <5E7FEC96-7F6B-4B2B-A165-C56F9E80C87E@gmail.com> article Path: news.gmane.org!not-for-mail From: David Krauss Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: First draft: Non-copyable call wrapper, std::unique_function Date: Wed, 20 May 2015 09:26:53 +0800 Lines: 79 Approved: news@gmane.org Message-ID: <5E7FEC96-7F6B-4B2B-A165-C56F9E80C87E@gmail.com> References: <59ED9069-2650-44E2-B00E-0E56ED37B83D@gmail.com> <27a788e7-4912-4a58-8201-79138ddf15a3@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2098\)) Content-Type: multipart/alternative; boundary="Apple-Mail=_61F33E0D-EDFD-4798-BD88-4364CDD98D1F" X-Trace: ger.gmane.org 1432085228 824 80.91.229.3 (20 May 2015 01:27:08 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 20 May 2015 01:27:08 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCW25A7E3QCRBZOF56VAKGQEDNIXIGQ@isocpp.org Wed May 20 03:27:04 2015 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-ig0-f198.google.com ([209.85.213.198]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Yusmk-0000RD-UI for gclcip-std-proposals@m.gmane.org; Wed, 20 May 2015 03:27:03 +0200 Original-Received: by igbso2 with SMTP id so2sf60320435igb.0 for ; Tue, 19 May 2015 18:27:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:content-type:message-id:mime-version :subject:date:references:to:in-reply-to:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:list-post:list-help:list-archive:list-subscribe :list-unsubscribe; bh=2L/7IROAjXIzNx0aEHHm3yT0xH2GhNqoq0d7zNr92R4=; b=FBjD797C1AOf+TL7brTlDkhufYmS1YT+Ozs44Cav33lfXpScEVyK1iSfOX6A8MASG3 t8npyjGx2X0LD+EkYwJ1N3/L0P9dxa3QOavMHHSW5cZ10Bu8KmEMC+RDWPaE62siF4gH NyqIXnQKluEFB0jNai3C6BWLl6JWYd59haZsFQrYZWyran9XbA+t3lnjVq4/ydS41xLw e35vIY+0aKrOOZ96eGbimtwECXeAxjhAUOzj+am9aWlHZMqTSPGjK4uI9J9wrsz5JPkp O2FAbCaYIZAWyP57ABqIL3Qt6U9RxaQzJbgPVFHFYH8twE6Hy4OGVj4uZ4BLfV+r07eO JIUg== X-Gm-Message-State: ALoCoQlKvMUr/hk71+HP2gGkhovZfC6CujgryZomfs840G6PiUJNY1TmjqdqYFzcyjpHyzYMaSur X-Received: by 10.50.57.1 with SMTP id e1mr29247869igq.0.1432085222031; Tue, 19 May 2015 18:27:02 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.182.131.164 with SMTP id on4ls205042obb.13.gmail; Tue, 19 May 2015 18:27:01 -0700 (PDT) X-Received: by 10.182.24.5 with SMTP id q5mr16382149obf.8.1432085221216; Tue, 19 May 2015 18:27:01 -0700 (PDT) Original-Received: from mail-oi0-x230.google.com (mail-oi0-x230.google.com. [2607:f8b0:4003:c06::230]) by mx.google.com with ESMTPS id nq4si827742oeb.18.2015.05.19.18.27.01 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 19 May 2015 18:27:01 -0700 (PDT) Received-SPF: pass (google.com: domain of potswa@gmail.com designates 2607:f8b0:4003:c06::230 as permitted sender) client-ip=2607:f8b0:4003:c06::230; Original-Received: by oign205 with SMTP id n205so24911290oig.2 for ; Tue, 19 May 2015 18:27:00 -0700 (PDT) X-Received: by 10.202.67.10 with SMTP id q10mr2525268oia.124.1432085220852; Tue, 19 May 2015 18:27:00 -0700 (PDT) Original-Received: from [172.20.10.2] ([121.54.44.91]) by mx.google.com with ESMTPSA id xp8sm7610530obc.10.2015.05.19.18.26.57 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 19 May 2015 18:26:59 -0700 (PDT) In-Reply-To: X-Mailer: Apple Mail (2.2098) X-Original-Sender: potswa@gmail.com X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of potswa@gmail.com designates 2607:f8b0:4003:c06::230 as permitted sender) smtp.mail=potswa@gmail.com; dkim=pass header.i=@gmail.com; dmarc=pass (p=NONE dis=NONE) header.from=gmail.com Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: 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:18012 Archived-At: --Apple-Mail=_61F33E0D-EDFD-4798-BD88-4364CDD98D1F Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 > On 2015=E2=80=9305=E2=80=9320, at 1:49 AM, Nevin Liber > wrote: >=20 > Can't you always make unique_any moveable, given that it can allocate in = the heap? unique_any is not proposed here, only mentioned in =E2=80=9Cfuture directio= ns.=E2=80=9D > Also, consider making unique_function(unique_function&&) noexcept. The noexcept qualification of unique_function is the same as for function. = Both allow exceptions to propagate from the move constructor when the small= function optimization is applied. It=E2=80=99s a rare corner case, but the= re=E2=80=99s no static information to make any guarantee. --=20 ---=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. Visit this group at http://groups.google.com/a/isocpp.org/group/std-proposa= ls/. --Apple-Mail=_61F33E0D-EDFD-4798-BD88-4364CDD98D1F Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=UTF-8
On 2015=E2=80= =9305=E2=80=9320, at 1:49 AM, Nevin Liber <nevin@eviloverlord.com> wrote:

Can'= t you always make unique_any moveable, given that it can allocate in the he= ap?

unique_any is not proposed here, only mentioned in =E2=80=9Cfu= ture directions.=E2=80=9D

Also, consider making unique= _function(unique_function&&) noexcept.

The noexcept qualificati= on of unique_function is the same = as for function. Both allow except= ions to propagate from the move constructor when the small function optimiz= ation is applied. It=E2=80=99s a rare corner case, but there=E2=80=99s no s= tatic information to make any guarantee.

--

---
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.
Visit this group at http://groups.google.com/a/isocpp.org/group/std-proposals/<= /a>.
--Apple-Mail=_61F33E0D-EDFD-4798-BD88-4364CDD98D1F-- .