220 18007 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 07:16:02 +0800 Lines: 23 Approved: news@gmane.org Message-ID: References: <59ED9069-2650-44E2-B00E-0E56ED37B83D@gmail.com> <4f0124c9-aa8e-4d40-b10e-7b3bee362398@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: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1432077393 27678 80.91.229.3 (19 May 2015 23:16:33 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 19 May 2015 23:16:33 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBAABBRUI56VAKGQEITGNFIY@isocpp.org Wed May 20 01:16:24 2015 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-qg0-f70.google.com ([209.85.192.70]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1YuqkK-0005gq-2b for gclcip-std-proposals@m.gmane.org; Wed, 20 May 2015 01:16:24 +0200 Original-Received: by qgew3 with SMTP id w3sf22045618qge.0 for ; Tue, 19 May 2015 16:16:23 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:content-type:mime-version:subject:from :in-reply-to:date:content-transfer-encoding:message-id:references: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=a+JN3K3ee59JkR3kDgwL+Mz/ME0B3gb22N7+v8VH7qE=; b=I0SijlZmA/bcRzeSxT696pjb4f7G4rHiJS2Bw/5oCjCyBu1B5nF0Df9v145NlyntlQ q0wnHfIU17y+9ffTWTSzFwn5dhMFssUgZ7ct9FAjtrmxfbnkAaYLUnvTwLcUv58Asn// Gi8xgejJaV/BuWQl6e7sIMlbZSrgb2MKZjZ/kwpNTipXf4DuLWP1sjn5DNHdb4Rs8K8s c/GIj90bsdMf53Qnl/vX5Epw7zN5WvObL5bWHRmISUtZmklXN7lqcZdYj1IcTPo/z0tO EL/WEN53sIFspo8G9dNl3ERdl+i5WA0b+KZhDxMw/uVajE35pQJi33oA55IerCvQq6wO 0q8A== X-Gm-Message-State: ALoCoQkSjugG1uZVg24ook70R/ycwNGAkbfkHJ15vYDqUEELwUbjbEa3pq8SPfFvlpv1E1Ygjr3r X-Received: by 10.236.17.138 with SMTP id j10mr44434850yhj.42.1432077383059; Tue, 19 May 2015 16:16:23 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.50.67.74 with SMTP id l10ls358835igt.23.gmail; Tue, 19 May 2015 16:16:22 -0700 (PDT) X-Received: by 10.70.95.228 with SMTP id dn4mr58521053pdb.89.1432077382279; Tue, 19 May 2015 16:16:22 -0700 (PDT) Original-Received: from nk11p04mm-asmtp001.mac.com (nk11p04mm-asmtpout001.mac.com. [17.158.236.236]) by mx.google.com with ESMTPS id kd10si23463513pbd.87.2015.05.19.16.16.22 for (version=TLSv1.2 cipher=AES128-GCM-SHA256 bits=128/128); Tue, 19 May 2015 16:16:22 -0700 (PDT) Received-SPF: pass (google.com: domain of potswa@mac.com designates 17.158.236.236 as permitted sender) client-ip=17.158.236.236; Original-Received: from [172.20.10.2] (unknown [121.54.44.93]) by nk11p04mm-asmtp001.mac.com (Oracle Communications Messaging Server 7.0.5.35.0 64bit (built Dec 4 2014)) with ESMTPSA id <0NOM006H5DYQA000@nk11p04mm-asmtp001.mac.com> for std-proposals@isocpp.org; Tue, 19 May 2015 23:16:07 +0000 (GMT) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.14.151,1.0.33,0.0.0000 definitions=2015-05-19_08:2015-05-19,2015-05-19,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=1 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=7.0.1-1412110000 definitions=main-1505190295 In-reply-to: <4f0124c9-aa8e-4d40-b10e-7b3bee362398@isocpp.org> X-Mailer: Apple Mail (2.2098) X-Original-Sender: potswa@mac.com X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of potswa@mac.com designates 17.158.236.236 as permitted sender) smtp.mail=potswa@mac.com; dmarc=pass (p=NONE dis=NONE) header.from=mac.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:18007 Archived-At: > On 2015=E2=80=9305=E2=80=9320, at 1:26 AM, Casey Carter wrote: >=20 > unique_function would probably be more useful if it had operator(). Jokin= g aside, there should probably be three overloads qualified by &, const&, a= nd && respectively. That way you both avoid std::function's threadsafety pr= oblems (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/n4348.html)= and enable unique_function to usefully hold "one-shot" functions. I=E2=80=99m writing a separate proposal for that. --=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/. .