220 23846 <1e75441d-d6c0-48d5-a122-3dbf504a061f@isocpp.org> article Path: news.gmane.org!not-for-mail From: Nicol Bolas Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: RFC: Unpacking tuples to value sequences Date: Tue, 19 Jan 2016 07:29:01 -0800 (PST) Lines: 89 Approved: news@gmane.org Message-ID: <1e75441d-d6c0-48d5-a122-3dbf504a061f@isocpp.org> References: Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_67_1848616644.1453217341540" X-Trace: ger.gmane.org 1453217359 25690 80.91.229.3 (19 Jan 2016 15:29:19 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 19 Jan 2016 15:29:19 +0000 (UTC) Cc: mwoehlke.floss@gmail.com To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBCEKFTV6ZUMBBPVM7G2AKGQEKYJJJNA@isocpp.org Tue Jan 19 16:29:09 2016 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-ig0-f199.google.com ([209.85.213.199]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1aLYDV-00037I-5k for gclcip-std-proposals@m.gmane.org; Tue, 19 Jan 2016 16:29:09 +0100 Original-Received: by mail-ig0-f199.google.com with SMTP id mw1sf245109654igb.0 for ; Tue, 19 Jan 2016 07:29:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:message-id:in-reply-to:references:subject :mime-version:content-type:x-original-sender:reply-to:precedence :mailing-list:list-id:x-spam-checked-in-group:list-post:list-help :list-archive:list-subscribe:list-unsubscribe; bh=ej68JsoP1+E40EZD0cHC7ZpBcOJz1LZkz1FPnAnPfXM=; b=RsDKozu1tben7bbeaRgUEJzZBSMJt5oHWRJjI+CT0Uh9u8JtyohcZA0a9l47tBCwl/ cFjJIm2yKnC6r2lJIffhw1MYpEm363tuZv2afyxqSTXLKsSvaBuJ+Y3rKEGkrmF4Cg8l HEOoeTzQoSiQrGJQ+DysweVUXHa3lhfhKaej5aa0fmz/lY8/q3DGayhbpV6brIv0fTVt 79j4SIibCHQcrgWARMxGCWSF76KV0EyQ5EjazwOLTeKeSSrJQglVr8tfQrNQwHpPPTm/ HAQ85du65wJm+JPOAGT/BOyrW27eO7RvgkCb0hTNL1sKq/z4yy7/rYZzn4IZ+vzm7xYb I3+Q== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:cc:message-id:in-reply-to:references:subject :mime-version:content-type:x-original-sender:reply-to:precedence :mailing-list:list-id:x-spam-checked-in-group:list-post:list-help :list-archive:list-subscribe:list-unsubscribe; bh=ej68JsoP1+E40EZD0cHC7ZpBcOJz1LZkz1FPnAnPfXM=; b=PLD86bH2sPGyqsvvENRjvgl8XFKvoACDN3wQ6/royjknw8yKuSzjs7D7rFeDaLSiai SFsf4tVvAOO2aUCDJr8PxphNE0Mjr0lEp+/m4j6+fqvz4LpYlOiRyd+Hi0Io3k/Vr5VO sA3Mw6ZqWRT0priLKsyYiMgA2Q5phLe1xnF4dfTY3+t8ID010wRV2NeDWre2qDm9A2m3 VPTM8WJZUte5KJAU8ZIMWMcPpqxyWnpy4zr2O8wFIpIuzlxxDKpTyJ/bDN+gb3O9zUQ6 +cmikDlNa1Ay1lViTXsstdFBtI7/5vguuyKvPgKnmpxWlE5OoGZwGGukJWPudAg70dP9 Hx6g== 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:cc:message-id:in-reply-to :references:subject:mime-version:content-type:x-original-sender :reply-to:precedence:mailing-list:list-id:x-spam-checked-in-group :list-post:list-help:list-archive:list-subscribe:list-unsubscribe; bh=ej68JsoP1+E40EZD0cHC7ZpBcOJz1LZkz1FPnAnPfXM=; b=DZJLC8+bGXHqEmgBWDV6jzVI+PyzY1cL84BEOD+EFS8wiktMhoFIB9XV3h1JOrxk9M PfyXIipkZSmTNMCR9YmD0ZfWoxnRBoKvgVdh+ok9iG82QQx88/lnvBSJCLqBr21r4aCo nOBPbqESctaF+dF6EAcENL9Iww5oeovWC/DdQz60G0MzIxcYF6wCJJ6v2xWeZYURZdft +uHB4eMcmtWV82OljCV41ol3vuUg4ob40FNJiNtgs8+s+M4VJ2H375p78CCzVrRtPZAd lSLhq9tol6fWkbBqB6uZomn/riaa/UJjX6ymqko9IRM42lW5i6txTB7VO2VsZCc4YB8l qF3g== X-Gm-Message-State: ALoCoQk9lJZt1+57oGajv70XRG3sREwkklkPwC0cAbLqXapjhGYBlG1J/Timcq6GPRvY6yfNr3FZrwtpX/mAORd6bKhF4OG+5A== X-Received: by 10.182.106.137 with SMTP id gu9mr27666753obb.26.1453217343330; Tue, 19 Jan 2016 07:29:03 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.107.15.224 with SMTP id 93ls1755210iop.100.gmail; Tue, 19 Jan 2016 07:29:02 -0800 (PST) X-Received: by 10.50.73.231 with SMTP id o7mr276217igv.2.1453217342259; Tue, 19 Jan 2016 07:29:02 -0800 (PST) In-Reply-To: X-Original-Sender: jmckesson@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:23846 Archived-At: ------=_Part_67_1848616644.1453217341540 Content-Type: multipart/alternative; boundary="----=_Part_68_1098742104.1453217341540" ------=_Part_68_1098742104.1453217341540 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On Tuesday, January 19, 2016 at 10:21:25 AM UTC-5, Matthew Woehlke wrote: > > On 2016-01-19 01:41, Jens =C3=85kerblom wrote:=20 > > Seems similar to my idea regarding structure bindings.=20 > > No, really it isn't. Structured binding and value sequence unpacking are= =20 > related, but significantly different. I tried to make that clear in the= =20 > beginning of the Rationale.=20 > > What can I say to make this clearer?=20 > He's talking about something he suggested earlier=20 ,=20 which he *calls* a form of "structured binding", but it's really something= =20 else. It's the ability to convert a tuple into a named parameter pack, via= =20 a syntax that *looks* somewhat like structured binding. You made some posts in that thread a month back, so you should be aware of= =20 it. --=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 https://groups.google.com/a/isocpp.org/group/std-propos= als/. ------=_Part_68_1098742104.1453217341540 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
On Tuesday, January 19, 2016 at 10:21:25 AM UTC-5, Matthew= Woehlke wrote:
On 2016-01-19 0= 1:41, Jens =C3=85kerblom wrote:
> Seems similar to my idea regarding structure bindings.

No, really it isn't. Structured binding and value sequence unpackin= g are
related, but significantly different. I tried to make that clear in the
beginning of the Rationale.

What can I say to make this clearer?

He's talking about something = he suggested earlier, which he calls a form of "structured = binding", but it's really something else. It's the ability to = convert a tuple into a named parameter pack, via a syntax that looks= somewhat like structured binding.

You made some posts in that threa= d a month back, so you should be aware of it.

--

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