220 20288 <49BB70AA-A28C-42F8-AF64-78E6AFA022BC@gmail.com> article Path: news.gmane.org!not-for-mail From: David Krauss Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Draft proposal - std::recover_cast: undoing type erasure Date: Sat, 5 Sep 2015 22:40:31 +0800 Lines: 70 Approved: news@gmane.org Message-ID: <49BB70AA-A28C-42F8-AF64-78E6AFA022BC@gmail.com> References: <7935FD03-ACA3-4D49-90B2-BDD107C2EF0B@gmail.com> <92CFDE52-5C4C-4C6B-9D83-C51A68397E85@gmail.com> <99D2F194-02FE-441F-859F-F97D585E9FE3@gmail.com> <74B8D90A-F8C2-4BC5-BEB5-75CDE6767A58@gmail.com> 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=_30B57F32-6989-46FD-A912-E70DA54A8E9E" X-Trace: ger.gmane.org 1441464049 10976 80.91.229.3 (5 Sep 2015 14:40:49 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 5 Sep 2015 14:40:49 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCW25A7E3QCRBZX5VOXQKGQEUZRUMBA@isocpp.org Sat Sep 05 16:40:40 2015 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-pa0-f70.google.com ([209.85.220.70]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZYEe0-0006tW-H2 for gclcip-std-proposals@m.gmane.org; Sat, 05 Sep 2015 16:40:40 +0200 Original-Received: by padan5 with SMTP id an5sf100699532pad.0 for ; Sat, 05 Sep 2015 07:40:39 -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:x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=nmyACGRjTHSL2lh0/8tDBToc9ZV4ip8eWSvJXB9nvFM=; b=HykJo/zmjItm+FzdPw48I8GIA3n+IRpLgo1/IFTx+0b2fE53ed7VRer7RirRkJVM5z YUb/LB8ivJNV4XPXYXnnPpZudsHFMsO27Vk6mWbFaT8hbguUXp5+Fr6Cfe9KtJCr5jyV v/zyKrhdWu77L/iLEU7d82CnQ3bf4+tQfJJeOKUH2EcAXTjtPiUbCLcT+BltWV4OVWO9 9FvcvfFgAOv2TYE+D0EovzquxHD4vtyrNKPJZDubgOSJhbyhtoOdIHZs6WQRootDlsbH CbDYRaokej2vEjg/nKYbD//emYDSNlNQbr0Wm6qrQn3hbPG4fZ7j0ZsWKpcnQ11yjBzr qoAQ== X-Gm-Message-State: ALoCoQnnP9hLesNWoox4XGZ+w/kwrJdMgM4QKISMEHmlZIn206r0JU4DPpngHbt2++NFhqHwtsHC X-Received: by 10.66.144.164 with SMTP id sn4mr9216351pab.9.1441464039417; Sat, 05 Sep 2015 07:40:39 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.50.13.66 with SMTP id f2ls434209igc.29.canary; Sat, 05 Sep 2015 07:40:38 -0700 (PDT) X-Received: by 10.50.114.100 with SMTP id jf4mr17561403igb.94.1441464038700; Sat, 05 Sep 2015 07:40:38 -0700 (PDT) Original-Received: from mail-pa0-x230.google.com (mail-pa0-x230.google.com. [2607:f8b0:400e:c03::230]) by mx.google.com with ESMTPS id s13si10414246pdi.27.2015.09.05.07.40.38 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 05 Sep 2015 07:40:38 -0700 (PDT) Received-SPF: pass (google.com: domain of potswa@gmail.com designates 2607:f8b0:400e:c03::230 as permitted sender) client-ip=2607:f8b0:400e:c03::230; Original-Received: by padhy16 with SMTP id hy16so49372222pad.1 for ; Sat, 05 Sep 2015 07:40:38 -0700 (PDT) X-Received: by 10.66.147.131 with SMTP id tk3mr21976265pab.104.1441464038497; Sat, 05 Sep 2015 07:40:38 -0700 (PDT) Original-Received: from [172.20.10.2] ([121.54.54.177]) by smtp.gmail.com with ESMTPSA id xg3sm6055711pbb.64.2015.09.05.07.40.36 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sat, 05 Sep 2015 07:40:38 -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:f8b0:400e:c03::230 as permitted sender) smtp.mailfrom=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-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:20288 Archived-At: --Apple-Mail=_30B57F32-6989-46FD-A912-E70DA54A8E9E Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 > On 2015=E2=80=9309=E2=80=9305, at 10:34 PM, Ville Voutilainen wrote: >=20 > any_cast is to any as dynamic_pointer_cast is to shared_ptr, dynamic_pointer_cast only transforms one shared_ptr into another. any_cast = is an accessor. any_cast is to any as operator* is to shared_ptr. --=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=_30B57F32-6989-46FD-A912-E70DA54A8E9E Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=UTF-8
On 2015=E2=80=9309= =E2=80=9305, at 10:34 PM, Ville Voutilainen <ville.voutilainen@gmail.com> wrote:
any_cast is t= o any as dynamic_pointer_cast is to shared_ptr,

dynami= c_pointer_cast only transforms one shared_ptr into another. any= _cast is an accessor.

any_cast is to any as = operator* is to shared_ptr.=

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