220 31787 article Path: news.gmane.org!.POSTED!not-for-mail From: Christopher Di Bella Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: This variable should not be named: an identifier (not) to remember Date: Mon, 27 Mar 2017 20:51:10 +0000 Lines: 112 Approved: news@gmane.org Message-ID: References: <985b9b2a-c734-45eb-95f4-db4dc0d309a1@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary=94eb2c122e4e760c2d054bbc817e X-Trace: blaine.gmane.org 1490647890 30549 195.159.176.226 (27 Mar 2017 20:51:30 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 27 Mar 2017 20:51:30 +0000 (UTC) To: "ISO C++ Standard - Future Proposals" Original-X-From: std-proposals+bncBCL55NVFWILRBSXW4XDAKGQEHX32AHA@isocpp.org Mon Mar 27 22:51:23 2017 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-it0-f71.google.com ([209.85.214.71]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1csbbg-0006zF-TN for gclcip-std-proposals@m.gmane.org; Mon, 27 Mar 2017 22:51:17 +0200 Original-Received: by mail-it0-f71.google.com with SMTP id o81sf76624577itg.2 for ; Mon, 27 Mar 2017 13:51:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject: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=oKTd3isdoxMvR++3o9wkanx+rYlLzZDbOCxL7RMeGCg=; b=BpSG9Hfg+dIddaMVUnfONZxHJPXfLO2UvzOVS2HaaOmmbWroHVNEPsi1/GCrHMAhaL hxn9vBgpJ6ZEro+bJPoi6u5cNYRJhq46OZp0CiTgSlWgao9sGnYDLTRIR+j44ph29tI5 0fvzuHBfsu0g+bQcrGY6PYtyT3vsK46DaBtpJCbwjB6pW56b5x5TnC2oe9W5aexqRkMt eqR3qZLlGM2xpUNMu6u9RNlyex5JpWZNH2RcE+UDaYiykLTRTcAdB7Z2LWLFodRzOs4Z 9aQajtcpCzYeh/G0qQakGGgmELPVUoM6dxIjL3BKFTboKhpZSvmn/8BTk04heIM2DtRG u2yQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject: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=oKTd3isdoxMvR++3o9wkanx+rYlLzZDbOCxL7RMeGCg=; b=qd8WN/Euj7J/Q3vTdgtARugvCJeH0WffvOPJdWs8+WS9suCdcHIUTQ6LQASfZ1hzns uj7KRWO6f+12w9hL0A77voOdFKWFKCqiMtQPgGM8hEtEBDTaVudG0KCULy8CCEc15G1U 7fKIXDQHHs6Gmvj7rxd5KEik9XDYEtLMSIU9veKusb5wntPzOWKwaZULnVIW88Q4DIWC AEmLdtzxAdYXlBcz75avkoUOv/+T1r4/W4zCQduWaXm1AhXyZQ8ODaEtTEgjlwk32gkX xeAQPGp1U6YDLBkFtCoVm+4VyVhZFPzDX7UXUk0y7NxlP5Y7mB0wipgsLZGLOuysM/BR PaLg== X-Gm-Message-State: AFeK/H2xqJDeJtxZWcxkey1zHHuN2KfVe8DWLHxwqsNG5+I44DGJpEgZcC3Xf1BvmvU0Xg== X-Received: by 10.107.16.170 with SMTP id 42mr7597699ioq.91.1490647882821; Mon, 27 Mar 2017 13:51:22 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.157.39.226 with SMTP id c89ls11093000otb.2.gmail; Mon, 27 Mar 2017 13:51:22 -0700 (PDT) X-Received: by 10.159.34.120 with SMTP id 111mr5889308uad.87.1490647882042; Mon, 27 Mar 2017 13:51:22 -0700 (PDT) Original-Received: from mail-vk0-x233.google.com (mail-vk0-x233.google.com. [2607:f8b0:400c:c05::233]) by mx.google.com with ESMTPS id x184si703901vkg.129.2017.03.27.13.51.21 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 27 Mar 2017 13:51:22 -0700 (PDT) Received-SPF: pass (google.com: domain of cjdb.ns@gmail.com designates 2607:f8b0:400c:c05::233 as permitted sender) client-ip=2607:f8b0:400c:c05::233; Original-Received: by mail-vk0-x233.google.com with SMTP id s68so66725603vke.3 for ; Mon, 27 Mar 2017 13:51:21 -0700 (PDT) X-Received: by 10.176.64.34 with SMTP id h31mr3342041uad.89.1490647881483; Mon, 27 Mar 2017 13:51:21 -0700 (PDT) In-Reply-To: <985b9b2a-c734-45eb-95f4-db4dc0d309a1@isocpp.org> X-Original-Sender: cjdb.ns@gmail.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com; spf=pass (google.com: domain of cjdb.ns@gmail.com designates 2607:f8b0:400c:c05::233 as permitted sender) smtp.mailfrom=cjdb.ns@gmail.com; dmarc=pass (p=NONE sp=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:31787 Archived-At: --94eb2c122e4e760c2d054bbc817e Content-Type: text/plain; charset=UTF-8 Hi, Thanks for taking the time out to write this! It seems like there is motivation, but I can't quite place my finger on it. If a variable isn't going to be used again, and can't be referenced, what are the benefits of its persistence have over `Foo{bar};`? Cheers, Chris On Tue., 28 Mar. 2017, 07:27 Alberto Barbati, wrote: > Hello, > > this is a draft for a proposal to add a special meaning to the identifier > __ (double underscore) so that it can be used (even repeatedly in the same > lexical scope) for all variables whose name is not important and that is no > longer needed after declaration. The draft includes a few examples. > > Is there any interest in this? > > Thanks in advance, > > Alberto > > -- > 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. > To view this discussion on the web visit > https://groups.google.com/a/isocpp.org/d/msgid/std-proposals/985b9b2a-c734-45eb-95f4-db4dc0d309a1%40isocpp.org > > . > -- 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. To view this discussion on the web visit https://groups.google.com/a/isocpp.org/d/msgid/std-proposals/CACL3gUVC1R9occL7vwiNTb9s4rD-%2Baemb4AprquTjQvr-xRjwg%40mail.gmail.com. --94eb2c122e4e760c2d054bbc817e Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

Hi,

Thanks for taking the time out to write this! It seems like = there is motivation, but I can't quite place my finger on it. If a vari= able isn't going to be used again, and can't be referenced, what ar= e the benefits of its persistence have over `Foo{bar};`?

Cheers,

Chris


On Tue., 28 Mar. 2017, 07:2= 7 Alberto Barbati, <albertob= arbati@gmail.com> wrote:
Hello,

this is a draft for a proposal to add a special meaning to t= he identifier __ (double underscore) so that it can be used (even repeatedl= y in the same lexical scope) for all variables whose name is not important = and that is no longer needed after declaration. The draft includes a few ex= amples.

Is there any interes= t in this?

Thanks in advance= ,

Alberto

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