220 15568 article Path: news.gmane.org!not-for-mail From: Arthur O'Dwyer Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: RFC: Adding Symmetry Between shared_ptr and weak_ptr Date: Sat, 10 Jan 2015 11:01:53 -0800 (PST) Lines: 68 Approved: news@gmane.org Message-ID: Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_346_1649129070.1420916513874" X-Trace: ger.gmane.org 1420916521 23423 80.91.229.3 (10 Jan 2015 19:02:01 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 10 Jan 2015 19:02:01 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBDLZJYWNDQIKF3WFUUCRUBGL2O3SE@isocpp.org Sat Jan 10 20:01:57 2015 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-qc0-f198.google.com ([209.85.216.198]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1YA1IK-00016Y-3R for gclcip-std-proposals@m.gmane.org; Sat, 10 Jan 2015 20:01:56 +0100 Original-Received: by mail-qc0-f198.google.com with SMTP id i8sf39043662qcq.1 for ; Sat, 10 Jan 2015 11:01:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:message-id:subject:mime-version:content-type :x-original-sender:reply-to:precedence:mailing-list:list-id :list-post:list-help:list-archive:list-subscribe:list-unsubscribe; bh=VPOraW0lAmn6GuKkPVO/Jqx6holwI5NlBmqkcqrEnrI=; b=JDcm8hLP9ToEO4DNbev9DhitlUjae3FgFNe0fUrsGJKqjexiah4g354cNPhIwS7hDs 2+bCrdlFOQd+DOb+THXLz1K0GuYhnMsHR/0U6YTUh6FIj1j04I276H5fmMcHkF+5+mcu l4QCAGyvAmGi7pl9EX497wwoQ7FDrBBmspbo5FRT6OXrSdX7l25ioHYkvAn64KmrvZDn 9U9tRUhpBuuCzpUd7F+vLbNiR41NCmlkyHOmJTHWyeIUqKKiMOvSmgvC78SkRJ9TIaJD 38UmncbRz1kfAl540fXZhOQqV8g5yZbdxLr1PV0ovgshObWV0kPr/BKFSvtRQPvc1rsl gZPA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:to:message-id:subject:mime-version :content-type:x-original-sender:reply-to:precedence:mailing-list :list-id:list-post:list-help:list-archive:list-subscribe :list-unsubscribe; bh=VPOraW0lAmn6GuKkPVO/Jqx6holwI5NlBmqkcqrEnrI=; b=bMts2vYtC1cRRmza33S8+JOvOkRiSRUmNzVyjpnyd1Fg7z6IE428laIWlWrB/CR6/6 5tBBsasTZLmcyWkTBcHgwM/KvulzNJnkPgWJPyawhR3YRbyrbUeNueqpnCpq8177uMbo CLjX5cA3jXN4oZ0mNC0CO9uT9XKjHWlO8VFW+sP10wcf/H1aOt8AD1grKTze+1/Cj5uh gSwDkEeLEBriyd8XSUalmB6AMaaCQxYA968S4WNDKCmVe9Ww16sBblPL8Mfx1JIoMRgf RvyEh+a44aYUrxZUeQVaRBzgkcph5iRA6fZUbT1AreVVIsESzV6QY+giY9BtX720enbi 5byg== X-Gm-Message-State: ALoCoQkYaqPzElnl90D1JiWEsJU89H/3SwtS4pPcMiExY0XN1wSKI5zhp4xeYYiqWLXAXUSiekGU X-Received: by 10.52.165.113 with SMTP id yx17mr16120518vdb.0.1420916514959; Sat, 10 Jan 2015 11:01:54 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.140.93.165 with SMTP id d34ls2102003qge.61.gmail; Sat, 10 Jan 2015 11:01:54 -0800 (PST) X-Received: by 10.140.91.40 with SMTP id y37mr742qgd.11.1420916514304; Sat, 10 Jan 2015 11:01:54 -0800 (PST) X-Original-Sender: arthur.j.odwyer@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:15568 Archived-At: ------=_Part_346_1649129070.1420916513874 Content-Type: multipart/alternative; boundary="----=_Part_347_494773300.1420916513877" ------=_Part_347_494773300.1420916513877 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable I've got a rough draft of a proposal for the next meeting in May, and would= =20 like to hear anyone's feedback on the format and content before then. https://quuxplusone.github.io/draft/Nweak_ptr_proposal.html The TL;DR is that it proposes two very small new library features: - shared_ptr::unlock(), which turns a shared_ptr into a weak_ptr, symmetric= =20 with weak_ptr::lock() - An two-argument constructor for weak_ptr(), symmetric with shared_ptr's= =20 two-argument constructor =E2=80=93Arthur --=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/. ------=_Part_347_494773300.1420916513877 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
I've got a rough draft of a proposal for the next mee= ting in May, and would like to hear anyone's feedback on the format and con= tent before then.

https://quuxplusone.github.io/draft/N= weak_ptr_proposal.html

The TL;DR is that it proposes= two very small new library features:
- shared_ptr::unlock(), whi= ch turns a shared_ptr into a weak_ptr, symmetric with weak_ptr::lock()
- An two-argument constructor for weak_ptr(), symmetric with shared_p= tr's two-argument constructor

=E2=80=93Arthur

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