220 27944 <1472148645.17129.15.camel@bsdforen.de> article Path: news.gmane.org!.POSTED!not-for-mail From: Dominic Fandrey Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Make (strongly typed) enums castable to char const * const Date: Thu, 25 Aug 2016 20:10:45 +0200 Lines: 50 Approved: news@gmane.org Message-ID: <1472148645.17129.15.camel@bsdforen.de> References: <1472132849.17129.9.camel@bsdforen.de> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Trace: blaine.gmane.org 1472148727 17152 195.159.176.226 (25 Aug 2016 18:12:07 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 25 Aug 2016 18:12:07 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCPM3OG72QHBB4XJ7S6QKGQEOWDAGDY@isocpp.org Thu Aug 25 20:12:03 2016 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-lf0-f71.google.com ([209.85.215.71]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bcz8E-00043a-Pu for gclcip-std-proposals@m.gmane.org; Thu, 25 Aug 2016 20:12:02 +0200 Original-Received: by mail-lf0-f71.google.com with SMTP id e7sf37353662lfe.0 for ; Thu, 25 Aug 2016 11:12:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=message-id:subject:from:to:date:in-reply-to:references:mime-version :content-transfer-encoding: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=cRVu5FinkR0CAkxMK8/+kQDCumPBU/nUKR9BVoseVmk=; b=jHwgV4C/Ss+MnSLLJN/1OWRYZ+A67cEEiWIDWtMI/8cyHB/6T99tBTAtWwoZRfvVEo hmn8cJCLggKRwjiikzo1F84hz8KJ1DTm0ehqZJwJJBNEiO+ssEUxJaT5cOfPwvRrvJoI MB+P0sY07Jl0tBmvT61UilznVQwT+m7rsQUTT9aUAr3xlOYgPWiIntTZyhjdt6lM9sBt m1JdHNXwqKniprtiHJfE3ey0wCGK+Vsc0h9hDowuZNgqbQj+jbAMc/U2ymw8YqCpB7nM FbK6vcI0DzWbQ8oRugy4bYS+jZm2M+8Ltnh7Aqbblz8jhOzVPDt8kAR5ufZwK+cypQEI Lsmg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:message-id:subject:from:to:date:in-reply-to :references:mime-version:content-transfer-encoding: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=cRVu5FinkR0CAkxMK8/+kQDCumPBU/nUKR9BVoseVmk=; b=ByIh3yR/WNWRhMui1INt7Akk/KVfrmFJGEeq9TM+8uB6n/BKgDheaqGy/Mpg7gerbX b1FKgBYzNAtJPHPX/piIUj56Cc9VQ7qgkqsBq5sxTAX4MLw3avjmz7enNcO8NR7RzZZJ aTtmDvqKCp3rwvMpgq33y182+sD4Yp4Se5WrJSme6PChy+QF4AnNXGU6mFUll91BIi3J zLXogzu71Cef/F3UVOUV0swHCG4qBHDyl+NCRsXpNq8t7wjxTaogHZCfw00rgjFDqDrV Ih8JtgYz8E5udUs0mV0qOxSkbLJevCjTbMVJfovElQVJURhgA52CzjD1zyq3TzCFScTk ODY X-Gm-Message-State: AEkoouvxh3emqjqavCNT1chVX0tOSPWnAu6ax8+P5hZB70QQAcWm+mBhj9FusMvnCgLs8g== X-Received: by 10.194.169.41 with SMTP id ab9mr1491682wjc.6.1472148723682; Thu, 25 Aug 2016 11:12:03 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.28.37.71 with SMTP id l68ls577503wml.14.gmail; Thu, 25 Aug 2016 11:12:02 -0700 (PDT) X-Received: by 10.194.185.202 with SMTP id fe10mr8719759wjc.93.1472148722403; Thu, 25 Aug 2016 11:12:02 -0700 (PDT) Original-Received: from bsdforen.de (bsdforen.de. [82.193.243.81]) by mx.google.com with ESMTP id b75si32973761wma.30.2016.08.25.11.12.02 for ; Thu, 25 Aug 2016 11:12:02 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of kamikaze@bsdforen.de designates 82.193.243.81 as permitted sender) client-ip=82.193.243.81; Original-Received: from [192.168.0.16] (HSI-KBW-46-223-128-55.hsi.kabel-badenwuerttemberg.de [46.223.128.55]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by bsdforen.de (Postfix) with ESMTPSA id C4F7A398232 for ; Thu, 25 Aug 2016 20:12:01 +0200 (CEST) In-Reply-To: X-Mailer: Evolution 3.18.5.1 FreeBSD GNOME Team Port X-Original-Sender: kamikaze@bsdforen.de X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of kamikaze@bsdforen.de designates 82.193.243.81 as permitted sender) smtp.mailfrom=kamikaze@bsdforen.de 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:27944 Archived-At: On Thu, 2016-08-25 at 16:55 +0100, D. B. wrote: > On Thu, Aug 25, 2016 at 4:17 PM, Derek Ross wrote= : >=20 > >=20 > > Note that enums can have duplicate values, which throws a wrench into t= he > > reflection works.=C2=A0=C2=A0E.g.: > >=20 > > enum class FooBar { KEKS =3D 2, DOSE =3D 2 }; > >=20 > > What will the result be for: > >=20 > > FooBar fb =3D FooBar::KEKS; > > cout << static_cast(fb) ; > >=20 > that only "throws a wrench into the reflection works" as proposed by the > OP, by no means generally. the WG proposal linked (A) would not support > this because it is static and (B) has presumably already accounted for su= ch > possibilities and effortlessly gets around them with compile-time > wizardry... again, *presumably.* >=20 It's not really useful for what I'm doing if it's not runtime capable. For multiple mentions I'd just leave it implementation defined or establish a simple first definition rule. I am assuming that in most cases overlapping definitions are aliases: =C2=A0 =C2=A0 enum class Flags { NONE =3D 0, COMPATIBLE =3D 1, COMPAT =3D 1= , EXPERIMENTAL =3D 2 }; -- A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing on usenet and in e-mail? --=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. To view this discussion on the web visit https://groups.google.com/a/isocpp= ..org/d/msgid/std-proposals/1472148645.17129.15.camel%40bsdforen.de. .