220 5313 <7718970.fhFWpGWnh7@tjmaciei-mobl2> article Path: news.gmane.org!not-for-mail From: Thiago Macieira Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Overloaded Declarators Date: Sat, 06 Jul 2013 09:56:15 -0700 Lines: 64 Approved: news@gmane.org Message-ID: <7718970.fhFWpGWnh7@tjmaciei-mobl2> References: <82b89c5e-ce4e-49c0-82b2-d6032631e3e3@isocpp.org> <3ab6aadf-3c8b-4054-87bb-9db8a786f847@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart4809131.u02t0EHU9j"; micalg="pgp-sha1"; protocol="application/pgp-signature" Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1373129785 20147 80.91.229.3 (6 Jul 2013 16:56:25 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 6 Jul 2013 16:56:25 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCB4TK757YBRBOMY4GHAKGQEUVVOVJI@isocpp.org Sat Jul 06 18:56:27 2013 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-fa0-f70.google.com ([209.85.161.70]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1UvVmd-0006cF-1i for gclcip-std-proposals@m.gmane.org; Sat, 06 Jul 2013 18:56:27 +0200 Original-Received: by mail-fa0-f70.google.com with SMTP id m1sf3574532fam.5 for ; Sat, 06 Jul 2013 09:56:26 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=x-beenthere:from:to:subject:date:message-id:user-agent:in-reply-to :references:mime-version:content-type:content-transfer-encoding :x-original-sender:x-original-authentication-results:reply-to :precedence:mailing-list:list-id:x-google-group-id:list-post :list-help:list-archive:list-subscribe:list-unsubscribe; bh=E0Y7wshGywF74xQ4ymmsFUxoiIU0Sl1AYfYNBkitYyY=; b=dV8dBE+lqj+A5yQ2MwOkhJjR7YQxL4Y6Z3czXB5Z78c2gxnoysammy4hCEwIJj19So sLsJePTJfryp9CqrIJ4gWRBEl9m/Wc3wLpyEubwyShvzLzioTWufUF0KN8DLde6kdx0B DpqbKlFbb2DsAlU5lQXR6yKBlkY9uE6SYSm1AGyGAcS/2Bj2j/1o93wAs+fdfor8mFDQ lrk0VpE3hmJCG5hx7+VVcCjEy22pgrqKANzBRqpsiwUwbwoSWlgM7H/62OGtV59lNWcq /ynXBQecHJbVl2xisXL8N0/wj80bvD3F2RxNYcPW1NipH0E/lLX24Hj1BlqDpYiNfjTZ X-Received: by 10.180.207.44 with SMTP id lt12mr4418083wic.5.1373129786690; Sat, 06 Jul 2013 09:56:26 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.180.36.77 with SMTP id o13ls772892wij.32.gmail; Sat, 06 Jul 2013 09:56:25 -0700 (PDT) X-Received: by 10.15.31.198 with SMTP id y46mr17442793eeu.135.1373129785274; Sat, 06 Jul 2013 09:56:25 -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 s8si10477126ees.88.2013.07.06.09.56.25 for ; Sat, 06 Jul 2013 09:56:25 -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-mobl2.localnet (c-76-105-211-168.hsd1.or.comcast.net [76.105.211.168]) by gondolin.macieira.info (Postfix) with ESMTPSA id B7BAE11B0C5 for ; Sat, 6 Jul 2013 09:56:24 -0700 (PDT) User-Agent: KMail/4.11 pre (Linux/3.7.9-104.fc17.x86_64; KDE/4.10.60; x86_64; git-07349df; 2013-02-16) In-Reply-To: <3ab6aadf-3c8b-4054-87bb-9db8a786f847@isocpp.org> 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:5313 Archived-At: --nextPart4809131.u02t0EHU9j Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="iso-8859-1" On s=E1bado, 6 de julho de 2013 00.23.02, andrewtomazos@gmail.com wrote= : > This is the same argument as existing overloaded operators. You woul= dn't=20 > argue that being able to define: >=20 > Bar operator+(Foo a, Foo b); >=20 > affects existing code that expects the built-in meaning of 3 + 4. That's exactly the point. It doesn't affect built-in meanings. Without the operator+ definition above, (foo) + (foo) won't compile, so= there's=20 no problem in adding the overload. You're permitting code to work where= it=20 otherwise wouldn't. And overloading the unary operator& seems like a mi= stake=20 to me, so I wouldn't count that as a good example to follow ("two wrong= s don't=20 make a right"). On the other hand, your proposal does change built-in meaning (of somet= hing=20 that is not an operator, by the way). The code =09Foo *ptr; already compiled and had a specific meaning. You want to change the mea= ning of=20 what it had. And, like I said, it's not an operator, it's actually a language constr= uct.=20 Unless you also want to support this: =09template =09using operator const =3D Foo; --=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 --nextPart4809131.u02t0EHU9j Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) iD8DBQBR2Ew2M/XwBW70U1gRAlxEAJ98n7Uk6yNT+68D4sEQMY6CnkpszACgkLXF 9cb8WGBScwh1y8s6p/V1AmM= =KMrA -----END PGP SIGNATURE----- --nextPart4809131.u02t0EHU9j-- .