220 23735 article Path: news.gmane.org!not-for-mail From: Matthew Woehlke Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Default tuple-like access Date: Fri, 15 Jan 2016 10:03:41 -0500 Lines: 28 Approved: news@gmane.org Message-ID: References: <569583AD.9050208@wanadoo.fr> <5697E783.2020509@wanadoo.fr> <20160114221625.4931665.26873.3290@gmail.com> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1452870254 21023 80.91.229.3 (15 Jan 2016 15:04:14 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 15 Jan 2016 15:04:14 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBC37LBFWUIFBBXMU4S2AKGQEB47IKKA@isocpp.org Fri Jan 15 16:03:59 2016 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-lb0-f198.google.com ([209.85.217.198]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1aK5uw-0002WM-GT for gclcip-std-proposals@m.gmane.org; Fri, 15 Jan 2016 16:03:58 +0100 Original-Received: by mail-lb0-f198.google.com with SMTP id dx9sf33069488lbc.3 for ; Fri, 15 Jan 2016 07:03:58 -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:content-transfer-encoding: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=IB3nwalr408+Rw7ttFPn+W3NZ4ibhS9hjsura2XpqEc=; b=00BRMb1rJz8sepirXzCowTU3pjLrp9ZKZrKfvg2PN08TZSmVeH4o8H9WUpIJtakwIh PW59BnhaXOdYtDzgOlRa6FmjDk6eMoMmG2E5JA4rmyxsqEnUPMEkZKEmlvjRGFPEjXqf thh9Zrh/PwVkG+REX5tZmFssQezcuVVbLeCmgp/bFJoJByzH3KKlGEG1CqzTG8Km/TrH e11QqvxhP1RLO1sz9vm2crTsOVgIHyX3z7OtqYVCQw5d72qHKX+MmZseZswEcL+RZZ6x RJ4PIa5u1uIbwHqJ420fGhazjBG7skLzypgNLXuSRSB6SgmZxIQCDC4 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:content-transfer-encoding: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=IB3nwalr408+Rw7ttFPn+W3NZ4ibhS9hjsura2XpqEc=; b=kHW+WDEbYHy/XAEg2KHBmBfxDjWSYm0OXlPC/XVE0rDD38zuRjiLJ8cJzxxYzsbm5z qawcR1NYRozi76c7olkAZJRSceE4pT53aeoLXChr8BpSgbnmtLGGuBp6uRiPtbzyntjR IkuIH3Wua02Ot85KIvAaJDGJhYEFJe/Pz9bBxgXFWvkQAY4pqKKkJHXgI6vOsIwZpQ2k 04b6kmb8qAlYdVLMGDxNuaPr5aGbkLM7IUCuW+5fPV7xCQl9SVVlFqBVdQVA3CZ9oi32 L0R7k961jEVtEOCKefcaAEPTcsXKGUuquMrSh/m6DGDzcw49hcx X-Gm-Message-State: AG10YOT2WdfJYhodMH8eJrZ050B/pZ5kYWCxfq6aKAqjpi3uuzOHN1FemoFMaw+VjulQ0g== X-Received: by 10.28.47.198 with SMTP id v189mr476056wmv.1.1452870238077; Fri, 15 Jan 2016 07:03:58 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.25.37.70 with SMTP id l67ls216906lfl.89.gmail; Fri, 15 Jan 2016 07:03:56 -0800 (PST) X-Received: by 10.25.207.65 with SMTP id f62mr2974455lfg.73.1452870236785; Fri, 15 Jan 2016 07:03:56 -0800 (PST) Original-Received: from plane.gmane.org (plane.gmane.org. [80.91.229.3]) by mx.google.com with ESMTPS id r184si5888714lfg.22.2016.01.15.07.03.56 for (version=TLS1 cipher=AES128-SHA bits=128/128); Fri, 15 Jan 2016 07:03:56 -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 1aK5un-0002RJ-UN for std-proposals@isocpp.org; Fri, 15 Jan 2016 16:03:50 +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, 15 Jan 2016 16:03:49 +0100 Original-Received: from mwoehlke.floss by tripoint.kitware.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 15 Jan 2016 16:03:49 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 15 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: <20160114221625.4931665.26873.3290@gmail.com> 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:23735 Archived-At: On 2016-01-14 17:16, Tony V E wrote: > Is there any value in separating size from get? >=20 > For example, a tuple of three ints, but returns =E2=80=8E17 (or more like= ly 0) for get<3>, get<4>, get<99>, etc.=20 >=20 > ie I have 3 but I can make up the rest. Similar to infinite ranges. Nothing in my suggestion precludes that. You could implement a generic get that returns the "out of range" value, and a tuple_size that returns the "real" size. (You'd have to provide an explicit tuple_size in such case, and I wouldn't count on an unbounded get not causing other problems...) --=20 Matthew --=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/. .