220 40396 article Path: news.gmane.org!.POSTED!not-for-mail From: "'Alisdair Meredith' via ISO C++ Standard - Future Proposals" Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: =?UTF-8?Q?Re=3A_=5Bstd=2Dproposals=5D_Enforce_explicit_casting_on_assi?= =?UTF-8?Q?gnment_and_return_type_=E2=80=98bool=E2=80=99?= Date: Mon, 08 Oct 2018 16:19:02 -0400 Lines: 149 Approved: news@gmane.org Message-ID: References: <5df28d28-a2f4-47cd-9da7-49c91ed6d6f4@isocpp.org> <2347972.SxI5vlWqa4@tjmaciei-mobl1> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 (1.0) Content-Type: multipart/alternative; boundary=Apple-Mail-16A6CF4E-70EC-42A9-908E-8FBC117A8B20 Content-Transfer-Encoding: 7bit X-Trace: blaine.gmane.org 1539029831 24238 195.159.176.226 (8 Oct 2018 20:17:11 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 8 Oct 2018 20:17:11 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBDWML5V6SIARBQXX53OQKGQEZ3FTX3I@isocpp.org Mon Oct 08 22:17:07 2018 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-qt1-f197.google.com ([209.85.160.197]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1g9bxh-0006As-Ib for gclcip-std-proposals@m.gmane.org; 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[17.172.80.96]) by mx.google.com with ESMTPS id t199-v6si7314566qke.105.2018.10.08.13.19.14 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 08 Oct 2018 13:19:14 -0700 (PDT) Received-SPF: pass (google.com: domain of alisdairm@me.com designates 17.172.80.96 as permitted sender) client-ip=17.172.80.96; Original-Received: from process-dkim-sign-daemon.st11p00im-asmtp002.me.com by st11p00im-asmtp002.me.com (Oracle Communications Messaging Server 8.0.2.2.20180531 64bit (built May 31 2018)) id <0PGA00G00QKWZQ00@st11p00im-asmtp002.me.com> for std-proposals@isocpp.org; Mon, 08 Oct 2018 20:19:03 +0000 (GMT) Original-Received: from icloud.com ([127.0.0.1]) by st11p00im-asmtp002.me.com (Oracle Communications Messaging Server 8.0.2.2.20180531 64bit (built May 31 2018)) with ESMTPSA id <0PGA007AXR3QQQ00@st11p00im-asmtp002.me.com> for std-proposals@isocpp.org; Mon, 08 Oct 2018 20:19:03 +0000 (GMT) X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1810080190 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-10-08_10:,, signatures=0 In-reply-to: X-Mailer: iPhone Mail (16A366) X-Original-Sender: alisdairm@me.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@me.com header.s=04042017 header.b="rf/h9rwV"; spf=pass (google.com: domain of alisdairm@me.com designates 17.172.80.96 as permitted sender) smtp.mailfrom=alisdairm@me.com; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=me.com X-Original-From: Alisdair Meredith Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Spam-Checked-In-Group: std-proposals@isocpp.org 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:40396 Archived-At: --Apple-Mail-16A6CF4E-70EC-42A9-908E-8FBC117A8B20 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Doh! Attached reply to wrong email in this thread. Sent from my iPhone > On Oct 8, 2018, at 4:09 PM, 'Alisdair Meredith' via ISO C++ Standard - Fu= ture Proposals wrote: >=20 > See my previous post on =E2=80=98explicit operator bool=E2=80=99, that wo= uld be useful for your implementation here, specifically avoiding the accid= ental operator=3D=3D. >=20 > AlisdairM >=20 > Sent from my iPhone >=20 >> On Oct 8, 2018, at 4:06 PM, Hyman Rosen wrote: >>=20 >>> On Mon, Oct 8, 2018 at 3:43 PM Thiago Macieira wr= ote: >>> By the same token, warnings need not be discussed in this mailing list = because=20 >>> they are not part of the C++ standard. They are QoI at best. >>=20 >> That's not true. I'm looking at N4741, and it mentions warnings in a nu= mber of places: >> [dcl.attr.fallthrough], [dcl.attr.unused], [dcl.attr.nodiscard], [dcl.at= tr.noreturn] >> They're all in notes and examples, but those are still part of the stand= ard, and they say >> things like "implementations should issue a warning" and "warning ... di= scouraged". >> --=20 >> You received this message because you are subscribed to the Google Group= s "ISO C++ Standard - Future Proposals" group. >> To unsubscribe from this group and stop receiving emails from it, send a= n 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/iso= cpp.org/d/msgid/std-proposals/CAHSYqdZcqvC4Len7ewSGr1cxVxaiknnU-mezQSYPmwGz= 4GsZiA%40mail.gmail.com. >=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= 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/isoc= pp.org/d/msgid/std-proposals/E2DB90EB-4D96-49E6-8AD6-D235ADE418D1%40me.com. --=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/C3D971D3-D227-4740-8442-89C06ADF1E2F%40me.com. --Apple-Mail-16A6CF4E-70EC-42A9-908E-8FBC117A8B20 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Doh! Attached reply to wrong email in t= his thread.

Sent from my = iPhone

On Oct 8, 2018, at 4:09 PM, 'Alisdair Mere= dith' via ISO C++ Standard - Future Proposals <std-proposals@isocpp.org> wrote:

See my previous post on =E2=80=98expl= icit operator bool=E2=80=99, that would be useful for your implementation h= ere, specifically avoiding the accidental operator=3D=3D.

AlisdairM

Sent from my = iPhone

On Oct 8, 2018, at 4:06 PM, Hyman Rosen &l= t;hyman.rosen@gmail.com> wr= ote:

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