220 13090 article Path: news.gmane.org!not-for-mail From: Ville Voutilainen Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Idea for new contextual keyword Date: Thu, 25 Sep 2014 01:42:03 +0300 Lines: 28 Approved: news@gmane.org Message-ID: References: <2ff42d9d-16df-4040-8ae1-0a17d4f78d97@isocpp.org> <0762e1e8-a99e-41c8-a96f-49fc824178ba@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 1411598533 11050 80.91.229.3 (24 Sep 2014 22:42:13 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 24 Sep 2014 22:42:13 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBC5JHI7A7ALRBO4RRWQQKGQEUHLDPMY@isocpp.org Thu Sep 25 00:42:06 2014 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-ob0-f200.google.com ([209.85.214.200]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1XWvGA-0003is-5N for gclcip-std-proposals@m.gmane.org; Thu, 25 Sep 2014 00:42:06 +0200 Original-Received: by mail-ob0-f200.google.com with SMTP id m8sf60849370obr.11 for ; Wed, 24 Sep 2014 15:42:04 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from: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=bU23OxkFgmn6hbluz7ayZKkPxzFSD6D5nStgnrXnqc0=; b=HHsXeW1w1WMEEXdTH4wk6O3aEpom/veIb4M14xBcOc5m769eT0oIXRLY2ReeFvv3DT 99fJRmGIB//80JmG00jjYxIm+Xqz1KYkYA436aY5Esy9THXhLazovu+hyCmUqg4oC89h nMHDvWKBJnBhgeuUdWQEBZfn9Pi3ulx6Z2gwn0/wDngfudJqsSrEaWDPA4Y2DcFWAiC1 inXI2fu+yG4mLHwBqtUHQ4JYfGEEYyaignkPbbQkYj+7xjvQ5lUCzVAisIGZUDv8bHWE 4AvY8w1Is4JrFT1AlinaRButVhg1moq7E6+Wo0m294lZbyr0Ukzxkm+78tlvMsybkp4U 9/dA== X-Gm-Message-State: ALoCoQmoKylVZGDc8a2zJUgbID1SKm9QVu0U9qSP8QrfCh/pBwGf8mLKC2KNadMwr4B+bZ1VGGA5 X-Received: by 10.42.210.17 with SMTP id gi17mr9350716icb.1.1411598524679; Wed, 24 Sep 2014 15:42:04 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.182.33.104 with SMTP id q8ls534875obi.51.gmail; Wed, 24 Sep 2014 15:42:03 -0700 (PDT) X-Received: by 10.60.144.41 with SMTP id sj9mr4663474oeb.20.1411598523417; Wed, 24 Sep 2014 15:42:03 -0700 (PDT) Original-Received: from mail-oi0-x234.google.com (mail-oi0-x234.google.com [2607:f8b0:4003:c06::234]) by mx.google.com with ESMTPS id fi7si564788obc.75.2014.09.24.15.42.03 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 24 Sep 2014 15:42:03 -0700 (PDT) Received-SPF: pass (google.com: domain of ville.voutilainen@gmail.com designates 2607:f8b0:4003:c06::234 as permitted sender) client-ip=2607:f8b0:4003:c06::234; Original-Received: by mail-oi0-f52.google.com with SMTP id a141so5921405oig.25 for ; Wed, 24 Sep 2014 15:42:03 -0700 (PDT) X-Received: by 10.182.142.67 with SMTP id ru3mr9862506obb.15.1411598523175; Wed, 24 Sep 2014 15:42:03 -0700 (PDT) Original-Received: by 10.76.24.198 with HTTP; Wed, 24 Sep 2014 15:42:03 -0700 (PDT) In-Reply-To: X-Original-Sender: ville.voutilainen@gmail.com X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of ville.voutilainen@gmail.com designates 2607:f8b0:4003:c06::234 as permitted sender) smtp.mail=ville.voutilainen@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-Google-Group-Id: 399137483710 List-Post: , List-Help: , List-Archive: List-Subscribe: , List-Unsubscribe: , Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:13090 Archived-At: On 25 September 2014 01:37, Matthew Woehlke wrote: > I also think you're missing the point. I want the compiler to help me > find bugs in my program. An implicit ctor that I didn't mean to be > implicit is a bug. I want the compiler to be able to tell me 'hey, did > you really mean this ctor to be implicit?' (which obviously implies > having a way to say 'yes, really I did'). This way, if I *didn't* mean > that, I am warned and have a chance to fix my code early, rather than it > being silently wrong and coming back to bite me later in a way that's > more difficult to track down. > > (Naturally, all of the above applies to conversion operators also...) There's no need to standardize anything for a compiler to be able to do that. Mandating that a compiler has to do that is a completely different matter. Changing the meaning of existing code just because we don't like the style it was written or think that such style is error-prone or dangerous (as correct as that may be) is difficult. -- --- 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/. .