220 9909 <7753088.rk1yxZLtPa@tjmaciei-mobl4> article Path: news.gmane.org!not-for-mail From: Thiago Macieira Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Explicitly-defaulted enumeration operators Date: Wed, 19 Mar 2014 11:49:09 -0700 Lines: 33 Approved: news@gmane.org Message-ID: <7753088.rk1yxZLtPa@tjmaciei-mobl4> References: <3B09C97E-7ADE-49ED-8C31-B5B41CD3DDE7@gmail.com> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1395254948 13342 80.91.229.3 (19 Mar 2014 18:49:08 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 19 Mar 2014 18:49:08 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCB4TK757YBRBKGNU6MQKGQEKYVXWDA@isocpp.org Wed Mar 19 19:49:17 2014 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-wi0-f200.google.com ([209.85.212.200]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1WQLY9-000873-Ec for gclcip-std-proposals@m.gmane.org; Wed, 19 Mar 2014 19:49:13 +0100 Original-Received: by mail-wi0-f200.google.com with SMTP id d1sf10634316wiv.7 for ; Wed, 19 Mar 2014 11:49:13 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:subject:date:message-id:user-agent :in-reply-to:references:mime-version: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-transfer-encoding:content-type; bh=eR1yP1qgkQiX6kdQ3L2HLoVMZJSch3U3a9Yp7/41hfo=; b=j4ZXvZ54O4C4cz3hfMnJUYminIAb/E/B9xph4p1HhV2kTrgi/GWR8604wSS19vNY9u kDVvkGX7Pzx8xF3eWgGqS7jq+s88DK514yI7dCGXblXfxc+1//f2jhtNcEqfO5yJyx49 GhMwVYckKbdMwc/PLG52oITQEVXCZgzEd6BYtQ2Jdf/fQAxmSRR5EAo04pozADCunjDz DCDYTTvqNVuyrp2Qi01X6+1MpIpz5O93/0cXBbdCt0hTOLGYNPgDCbTL0k+GVY+DYqlv UA4R/JhQhx/RbHmCgiUT8D8wvgjQFW4dIwSpXZzea6Ka2Q100zQ9jwDMjm1XQpnnQhkU SWg X-Gm-Message-State: ALoCoQlovyKwC1Hh53Y+7RG035nfeqtE/RBuWukDyJSfzcNC84sx2ZtpzGqUU3nvCe7330K1w8Lj X-Received: by 10.112.209.102 with SMTP id ml6mr16250455lbc.1.1395254953140; Wed, 19 Mar 2014 11:49:13 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.180.91.136 with SMTP id ce8ls649639wib.24.gmail; Wed, 19 Mar 2014 11:49:12 -0700 (PDT) X-Received: by 10.15.52.195 with SMTP id p43mr172041eew.112.1395254952018; Wed, 19 Mar 2014 11:49:12 -0700 (PDT) Original-Received: from gondolin.macieira.info (gondolin.macieira.info. [2a01:4f8:d13:f81:21c:14ff:fe01:12a3]) by mx.google.com with ESMTP id u49si28279574eef.352.2014.03.19.11.49.11 for ; Wed, 19 Mar 2014 11:49:11 -0700 (PDT) Received-SPF: pass (google.com: domain of thiago@macieira.org designates 2a01:4f8:d13:f81:21c:14ff:fe01:12a3 as permitted sender) client-ip=2a01:4f8:d13:f81:21c:14ff:fe01:12a3; Original-Received: from tjmaciei-mobl4.localnet (jfdmzpr05-ext.jf.intel.com [134.134.139.74]) by gondolin.macieira.info (Postfix) with ESMTPSA id 0E71611A704 for ; Wed, 19 Mar 2014 11:49:11 -0700 (PDT) User-Agent: KMail/4.11.5 (Linux/3.11.10-7-desktop; KDE/4.11.5; x86_64; ; ) In-Reply-To: X-Original-Sender: thiago@macieira.org X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of thiago@macieira.org designates 2a01:4f8:d13:f81:21c:14ff:fe01:12a3 as permitted sender) smtp.mail=thiago@macieira.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:9909 Archived-At: Em qua 19 mar 2014, =E0s 13:48:31, Matthew Woehlke escreveu: > Something else I would really love to see though is using an enumeration= =20 > as an underlying ("base") type of an enumeration, e.g.: >=20 > enum class A { a1, a2, ... }; > enum class B : A { b1, b2, ... }; >=20 > B bb =3D B::a1; // legal; a1, etc. are in scope of B, inherited from A That would be very welcome. Multiple inheritance too. It would solve some of the hacks I had to do for QUrl, when some functions= =20 take only a subset of the flags. I could have split them in two separate=20 parameters, though. --=20 Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org Software Architect - Intel Open Source Technology Center PGP/GPG: 0x6EF45358; fingerprint: E067 918B B660 DBD1 105C 966C 33F5 F005 6EF4 5358 --=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 http://groups.google.com/a/isocpp.org/group/std-proposa= ls/. .