220 24078 article Path: news.gmane.org!not-for-mail From: Matthew Woehlke Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: RFC: Unpacking tuples to value sequences Date: Fri, 29 Jan 2016 16:03:46 -0500 Lines: 31 Approved: news@gmane.org Message-ID: References: <6f3ece34-e302-4d95-afd0-4c1924e8a780@isocpp.org> <6ad65a24-8a2e-4053-b9c9-80d296d98e7d@isocpp.org> <72de7daf-93af-4e55-95ea-67898bd2a5f6@isocpp.org> <29e7b2a0-05fb-46e2-92bc-2a83f8a1e53c@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Trace: ger.gmane.org 1454101454 29020 80.91.229.3 (29 Jan 2016 21:04:14 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 29 Jan 2016 21:04:14 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBC37LBFWUIFBBPVHV62QKGQEUT4TC3A@isocpp.org Fri Jan 29 22:04:05 2016 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-lb0-f199.google.com ([209.85.217.199]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1aPGD2-0000aM-UQ for gclcip-std-proposals@m.gmane.org; Fri, 29 Jan 2016 22:04:00 +0100 Original-Received: by mail-lb0-f199.google.com with SMTP id p10sf26689945lbo.0 for ; Fri, 29 Jan 2016 13:04:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=to:from:subject:date:lines:message-id:references:mime-version :content-type:user-agent: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=B1VE2JymGtQltgaiwtHiuiswHq2Kpmbii0nCYrZB1lI=; b=HiuWG9oRRl28bvq+A5PFfeV/RS2TMKw8EgXF2qYG+KAy+2kynPKDCUI5wqgQpAfqEo qb+VwvxWS9mKigveF1ES9nAa3QLKo/LavMBBmCu0q8swJ13gnopGIhwwqbe2TLrKGZhW vwxXhpwFEl0rnubb4xpBLYtWs1MQg7jdf3hhXXaLfSLHFXn4mau8lGFUuoN9RWZ3zomQ +hU95f7uC9395S4jGoyVrYSPod3rdFrX1f/BUUs3u20RvrEuGeonbyfQTDk/aYOV/XrK /XQgdu5seZcCCNEi27bIAEiAnSJub2PBAAlh27FQ6VD8QWmJ5WdWcVh7I8206+uht8HZ kQd X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:to:from:subject:date:lines:message-id:references :mime-version:content-type:user-agent: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=B1VE2JymGtQltgaiwtHiuiswHq2Kpmbii0nCYrZB1lI=; b=iqLCatIHuXRfrklOXekiXPCBg5wNP7GRa2Noms0GCce/rGiN571ma4x5+8NkWSp4mB kGftRgvyiChOeOLlHCaoZsHZqsvNcI3G07wPv1YQg6PTRbLrutvy4eFNGegOJxKmGEoV pUtz5awxgDCmSH/kATqyGJZGUXlH+fXx92WWab2X7I8hoUJWrBswrUneCly/rn38avfP /rSczWzP6fa20H6xsQAoNQh9lU7kH0cqdimBAiN/GWG2RWcJZcs4yMwfmxURSTCS2OSe BMpiqVXNZWCTMUuAzUqIb8PtfecY/K9ir9ooYPV8/kSjnr2oCD+4B9K8bwGYx9ou5DMR X-Gm-Message-State: AG10YOSWpL6t2G9Vxfrz/Epl8dEqPauKXgIb6kXQ4tqfTHjxc5RisdhPQZYwZxotkD2xPQ== X-Received: by 10.28.184.201 with SMTP id i192mr239120wmf.2.1454101440094; Fri, 29 Jan 2016 13:04:00 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.25.155.12 with SMTP id d12ls549102lfe.34.gmail; Fri, 29 Jan 2016 13:03:58 -0800 (PST) X-Received: by 10.25.213.134 with SMTP id m128mr4094173lfg.87.1454101438041; Fri, 29 Jan 2016 13:03:58 -0800 (PST) Original-Received: from plane.gmane.org (plane.gmane.org. [80.91.229.3]) by mx.google.com with ESMTPS id o10si8990570lfb.91.2016.01.29.13.03.57 for (version=TLS1 cipher=AES128-SHA bits=128/128); Fri, 29 Jan 2016 13:03:57 -0800 (PST) Received-SPF: pass (google.com: domain of gclcip-std-proposals@m.gmane.org designates 80.91.229.3 as permitted sender) client-ip=80.91.229.3; Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1aPGCw-0000Sj-F5 for std-proposals@isocpp.org; Fri, 29 Jan 2016 22:03:54 +0100 Original-Received: from tripoint.kitware.com ([66.194.253.20]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 29 Jan 2016 22:03:54 +0100 Original-Received: from mwoehlke.floss by tripoint.kitware.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 29 Jan 2016 22:03:54 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 22 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: tripoint.kitware.com User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 In-Reply-To: X-Original-Sender: mwoehlke.floss@gmail.com X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of gclcip-std-proposals@m.gmane.org designates 80.91.229.3 as permitted sender) smtp.mailfrom=gclcip-std-proposals@m.gmane.org; dmarc=fail (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:24078 Archived-At: On 2016-01-29 14:20, Arthur O'Dwyer wrote: > Having said all that, this "postfix twiddle means std::get<> (and/or > std::tuple_element_t<>)" thing still feels too ad-hoc to me. If we > could come up with a nice syntax for it, I'd prefer to have the > std::get<> written out and just build a simple syntax for getting a > parameter-pack of *integer indices*. Ugh, please no :-). I'm already not happy about writing: auto t = get_tuple_like(); foo(t~...); // or whatever; I still don't like '~' If I have to write: foo(get(t)); ....instead (for presumably some not-very-short spelling of "MAGIC" likely involving a `decltype(t)`), I am not going to be happy. And I am also going to think we have entirely missed the point. -- Matthew -- --- 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 email 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-proposals/. .