220 35185 <20171031150140.5156944.20370.38945@gmail.com> article Path: news.gmane.org!.POSTED!not-for-mail From: Tony V E Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Add .emplace() method to std::unique_ptr and std::shared_ptr like it is in std::optional. Date: Tue, 31 Oct 2017 11:01:40 -0400 Lines: 80 Approved: news@gmane.org Message-ID: <20171031150140.5156944.20370.38945@gmail.com> References: <58eb77f6-2c2d-4ec1-85f8-08dcfe25a23e@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Trace: blaine.gmane.org 1509462254 14343 195.159.176.226 (31 Oct 2017 15:04:14 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 31 Oct 2017 15:04:14 +0000 (UTC) Cc: antanubis@gmail.com To: =?utf-8?q?=27Thomas_K=C3=B6ppe=27_via_ISO_C++_Standard_-_Future_Proposals?= , ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBCUZ5QWKNQINPIHCZ4CRUBA6JIVQ4@isocpp.org Tue Oct 31 16:04:05 2017 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-io0-f199.google.com ([209.85.223.199]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1e9Y51-0001eN-Ka for gclcip-std-proposals@m.gmane.org; Tue, 31 Oct 2017 16:03:51 +0100 Original-Received: by mail-io0-f199.google.com with SMTP id 189sf43533908iow.8 for ; Tue, 31 Oct 2017 08:03:59 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1509462238; cv=pass; d=google.com; s=arc-20160816; b=fUc0ioU9FfJu1hY/ybYzKTj+X0zFzAbZPpZsgw39f09fJaIAusg3STcBtSKCi70Nw5 E0t5mlFIB+HMJpS82FXVM0RoH9RfQYqLk4LZrv0MmwepvQddM86gu/tVv22v2lhSOHms ErYeV3SIl5ue8zos0BaqWYW2LFnr9l6zRwwuG6uvS0Fr8H8sgw9/IIC1dLqyiE/taylK qyEluWKUTUqnbzS1bIicoZuwoFGH0rQXRLTnnUs/LxbrIqHHqq3LJHSwOu5lUhWoSCFD 9CkfL/zeFh0F/T6qZkL494pspemCd7vKHBSTHiBbW/LiBmC8wxqERVK27a/NUrQZB4EK DquA== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-unsubscribe:list-subscribe:list-archive:list-help:list-post :list-id:mailing-list:precedence:reply-to:cc:to:references :in-reply-to:from:subject:date:message-id:content-transfer-encoding :mime-version:arc-authentication-results:arc-message-signature :dkim-signature:arc-authentication-results; bh=FDGKmPoZ5holybELmiC3+VQrGQbJqpGoPHldtlFyyvU=; b=yRmF4+hZKuW4JxlHaI7N36FZBn6svL/7cq4X14Cy+posRmKR1mbm4J83Zufc6mO1Nf qZ8XtZK9tOZZsCRNa3X3kVmQNmEQhrGjX7W43MtOUF43Ier59yijdF37FWgDV8L++Lin fvbe/DrZj2hVMNgCXPXZg295xMxmu/uEWyY+PoDFHAZBxuau4NUj8Y4PyhcFR3M6tPU0 gbrHtaCdMelPXp5XCjdkV6JCorX66aJd6nxCj/1uVhuGiV/Bi2B8AwazjxJQT8JAdIFJ /PsDM0GVzN6U7Me/7PAI6IxPXXbv70dXArgkUBB/wRjZScO+Yf/3fbGjnb4gAGuy0an1 WCJA== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=LxvgwNwe; spf=pass (google.com: domain of tvaneerd@gmail.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=tvaneerd@gmail.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=gmail.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=mime-version:content-transfer-encoding:message-id:date:subject:from :in-reply-to:references:to:cc: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=FDGKmPoZ5holybELmiC3+VQrGQbJqpGoPHldtlFyyvU=; b=KGTAV/eZOM0e1yQcdaomRQA0NPLi0OVUbirTCW9UnJ8covEAP6KAYMuHsfdOb+4WML wyVUHCaZfhrngewiNV5NR3GHh6UAZyNaZqcz3MYKcebH78+8k6ztfXAOZsBOK+Ej1bGK ZVnfkPuSSMa8Qi6QBtTcNsYga1BH/BHxBQIMRK3V98IZdRlFdpwujZEZAbiZCEOC9g1n KVYHYtGFlR4lAifAy81xBRKkPju1ua4ZNsWpDf809hKnKQK5cmAiDXGvCxmzX6ISKzWn x1DM+hhixE2KyRLdYq4VKcUN9Z7YjqBSvUaXCFwQIpCZvA2peKRzUQIaxtq5q1DBptjS HhsQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:content-transfer-encoding :message-id:date:subject:from:in-reply-to:references:to:cc :x-original-sender:x-original-authentication-results:reply-to :precedence:mailing-list:list-id:x-spam-checked-in-group:list-post :list-help:list-archive:list-subscribe:list-unsubscribe; bh=FDGKmPoZ5holybELmiC3+VQrGQbJqpGoPHldtlFyyvU=; b=ePOl+maEBk5BZLBRsrarWuBvTz3Vc/JA0uq1DALdQkdGyAhvyd6g3MUiJ93Y0Y9dwv X9lfWNPgLVF24H42tZrKFfrcgYRm6CryFCnh9B1Jt/TFtp+z3epfwGG1ds8wSjlprz1u x5/HET0yqeNV2+m2tTJho6gBgLlhY69pL7oI9k6IYLI1VRQYdln5/G1A9TNN17Rlz/VO Dd0A8CkXivaYW07foHwl9YAAh1jxvQWe9dOZBxvtOI10cDSG1OAC0EFYpJO+VkDDQC1j DffwE/RNCvaIXX9gjxDKNwXGaHwK7AAbXbIWoqrEEr13pW10t28IXrpnzwIAUGAmnzVL X-Gm-Message-State: AMCzsaU0w4huAMo6w6WQxNqOLO4Yam4gXqTbzY9sieLqszBX5O9MxjIM yWzsc5+YU6hv5lx6r3VO3TbzJA== X-Google-Smtp-Source: ABhQp+SDNAE7Y8dRNs80Ialq/i++PJ0a8dFkve6IZ3NBGi9GnTUOiqP0U8CrgV1tFSDK39MnW00bfA== X-Received: by 10.36.179.77 with SMTP id z13mr1914236iti.32.1509462238854; Tue, 31 Oct 2017 08:03:58 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.107.11.16 with SMTP id v16ls2367875ioi.15.gmail; Tue, 31 Oct 2017 08:01:42 -0700 (PDT) X-Received: by 10.107.8.207 with SMTP id h76mr2708501ioi.270.1509462102157; Tue, 31 Oct 2017 08:01:42 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1509462102; cv=none; d=google.com; s=arc-20160816; b=bm4TxqLOZlN6JSrfTnu6X7XIhKY0O6qRU4U3HSjFtfBgAkr6XL9pE0dUbEJ3bMXsEO CT/tGB4yDIZe8pxbGmER4gqWQCfc1B+j4Oq2ZfkSpEVefjB2OK5+DtG4hA8hVIXb0ZGC pYOCzlL8eQvNvVlKXyXRYL/krKg/HLBoc905nXD46Ces/uMNKOhcr+hQHwqhWwYjVBuL 8oKhPvBHXbVcfaeFdookm79857nmwOA4obVzuA/K00w8OACZfYciTQd6Wxf9CTO2HEls c20Kq0o5R5PPY1BvVFnWE6qcWohyeTk3mvbx3PmDDPfjhuuhRoxRsP8NVK1inASJSipJ X1oQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=cc:to:references:in-reply-to:from:subject:date:message-id :content-transfer-encoding:mime-version:dkim-signature :arc-authentication-results; bh=nUwBeW7dWXj8Lbjm8FgEEZrEgHTb67Tp/XvBU1HvGmw=; b=oNw8W2HKbe18Oojc0a4ox4fyzUxAi/cPW3yAMGjy5NgIDcXxes/SwdRtg1dHE6lOFq ushi217GTRtV+rLbIW7c2A8m3Bxpx4+JW1cFXbvPCjb4irv8YGnEeswMoJUQ52wDIsIa 8YZ7NL3pm6fifO/6Xp+ArGRtzg+t4azsbK19igUQxIUUR9YdX13NhOJ9ujg8KQaG/sBx QItz31SeuoBLadI1vtsM7B2AO4zb8tSb08Oscw6DmULtTzlbPazdPlRBAfO6cs0eJ8xT Dn0SiXW2GM8HUJuUpl/e6PmORkTo6JdYfph34pJBO0Z4Fbyj58RnCDM919F7fR9sqvcr //Ww== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=LxvgwNwe; spf=pass (google.com: domain of tvaneerd@gmail.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=tvaneerd@gmail.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=gmail.com Original-Received: from mail-sor-f41.google.com (mail-sor-f41.google.com. [209.85.220.41]) by mx.google.com with SMTPS id d2sor772962ioc.355.2017.10.31.08.01.42 for (Google Transport Security); Tue, 31 Oct 2017 08:01:42 -0700 (PDT) Received-SPF: pass (google.com: domain of tvaneerd@gmail.com designates 209.85.220.41 as permitted sender) client-ip=209.85.220.41; X-Received: by 10.107.17.68 with SMTP id z65mr2733168ioi.3.1509462101547; Tue, 31 Oct 2017 08:01:41 -0700 (PDT) Original-Received: from [127.0.0.1] (glphon2233w-lp130-01-70-53-68-35.dsl.bell.ca. [70.53.68.35]) by smtp.gmail.com with ESMTPSA id 31sm754784ioq.10.2017.10.31.08.01.40 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 31 Oct 2017 08:01:40 -0700 (PDT) X-Mailer: BlackBerry Email (10.3.3.2205) In-Reply-To: X-Original-Sender: tvaneerd@gmail.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=LxvgwNwe; spf=pass (google.com: domain of tvaneerd@gmail.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=tvaneerd@gmail.com; dmarc=pass (p=NONE sp=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:35185 Archived-At: =
And I was wondering if emplace was going to reuse the existing = memory (when available) and that might also require coordination with the d= eleter.

Also, unique_ptr supports =E2=80=8Efancy poi= nters. Keep that in mind.
= =

= =
Sent from my BlackBerry portable Bab= bage Device
= =
From: 'Thomas K=C3=B6ppe' via ISO C++ Sta= ndard - Future Proposals
Sent: Tuesday, October 31, 2017 1= 0:33 AM
To: ISO C++ Standard - Future Proposals
= Reply To: std-proposals@isocpp.org
Cc: antanubis@gm= ail.com
Subject: [std-proposals] Re: Add .emplace() method= to std::unique_ptr and std::shared_ptr like it is in std::optional.
<= /div>
It seems to me t= hat emplacement should be provided by the deleter, since the deleter does t= he matching deleting. So perhaps a more fruitful pursuit would be to add an= "emplace" to the deleter, and then have the unique_ptr's delete forward to= that.

--
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-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.goo= gle.com/a/isocpp.org/d/msgid/std-proposals/a30180ed-684d-440d-af4a-ad8aa2e6= b3a4%40isocpp.org.

--
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/20171031150140.5156944.20370.38945%40gm= ail.com.
.