220 14525 article Path: news.gmane.org!not-for-mail From: Matthew Woehlke Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Range-based if Date: Thu, 13 Nov 2014 14:53:31 -0500 Lines: 36 Approved: news@gmane.org Message-ID: References: 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 1415908439 5397 80.91.229.3 (13 Nov 2014 19:53:59 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 13 Nov 2014 19:53:59 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCO5FYHBU4ERBS4YSSRQKGQEL3JCYAA@isocpp.org Thu Nov 13 20:53:49 2014 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-ee0-f71.google.com ([74.125.83.71]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Xp0Sj-00053u-30 for gclcip-std-proposals@m.gmane.org; Thu, 13 Nov 2014 20:53:49 +0100 Original-Received: by mail-ee0-f71.google.com with SMTP id e51sf9861317eek.10 for ; Thu, 13 Nov 2014 11:53:48 -0800 (PST) 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:user-agent:in-reply-to:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:list-post:list-help:list-archive:list-subscribe :list-unsubscribe:content-type; bh=T2HSuGfckmBwDW3pkX18ITifA8umvMzyi7G8iWZN7wk=; b=llvQ9sxDSFaWqgwcoFvq4rpMfx/+6srCglUtIvbDYSbm7+EiZkMIcdHLcTRtlv/or/ qpWEtKCpYranQ6g665IKBjhHI1p1K9apqbVnH7A/xSkOZFGyE/N2HqK4z3H5ItRWq9KV SWl4non80w+Bn//JqCozguA0L39xJlGyE/bCazbDtMAshvv77aowwe/sSfsIGD3+znDe C7kd610YG85Sf2xfHU6VwegfqcNY9z2WKdSKKr3C5zahptXfmJG73mNcokH80rImQHN1 MyS8bxrtLjz4B0K8I/EooQXLgtZnjuJsfqwJwWPN+IeNVqM8Qgc6RfiwMgsXHK2kzMYk ZS9g== X-Gm-Message-State: ALoCoQkbXEBRUQ+JKDDjqpT3x3fYTU/9XcF86zB5P2vuCXgceUHAJoS0EucKJHaTNQowzu59uxDc X-Received: by 10.112.55.10 with SMTP id n10mr908140lbp.14.1415908428804; Thu, 13 Nov 2014 11:53:48 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.152.21.200 with SMTP id x8ls774608lae.76.gmail; Thu, 13 Nov 2014 11:53:47 -0800 (PST) X-Received: by 10.152.43.80 with SMTP id u16mr4258736lal.53.1415908427116; Thu, 13 Nov 2014 11:53:47 -0800 (PST) Original-Received: from plane.gmane.org (plane.gmane.org. [80.91.229.3]) by mx.google.com with ESMTPS id wx5si39393594lbb.123.2014.11.13.11.53.46 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Thu, 13 Nov 2014 11:53:46 -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 1Xp0Se-00052N-L5 for std-proposals@isocpp.org; Thu, 13 Nov 2014 20:53:44 +0100 Original-Received: from cpe-67-240-43-113.nycap.res.rr.com ([67.240.43.113]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 13 Nov 2014 20:53:44 +0100 Original-Received: from mw_triad by cpe-67-240-43-113.nycap.res.rr.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 13 Nov 2014 20:53:44 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 27 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: cpe-67-240-43-113.nycap.res.rr.com User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0 In-Reply-To: X-Original-Sender: mw_triad@users.sourceforge.net 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.mail=gclcip-std-proposals@m.gmane.org 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:14525 Archived-At: On 2014-11-13 12:33, Brent Friedman wrote: > I believe I was misinterpreting your intent. I had interpreted &begin() as > a *begin() typo, not a &*begin() typo. Ah... yeah, that could cause our confusion :-). > If the intent is to return pointer-to-dereferenced-value, then that > creates a separate issue. If *begin() returns say int (rather than > int&) then that would return pointer-to-temporary-on-the-stack. Right, that would be what I was getting at ("might not be possible in all cases") in the previous message. To be fair, I actually somewhat like your idea (I might even use it in my own code if it was available; I have that "itching sensation" that I've written code before where I could have used it), but I've seen how language changes generally have a very high bar to pass. Unfortunately, convenient or not, my impression is that this doesn't have a very good chance of being accepted. The bar tends to be lower where a library solution exists (and of course, you can write and use the library solution yourself), which is partly why I was exploring that. (For that matter, maybe your use doesn't run afoul of the above issue...) -- 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 http://groups.google.com/a/isocpp.org/group/std-proposals/. .