220 40384 article Path: news.gmane.org!.POSTED!not-for-mail From: Hyman Rosen 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, 8 Oct 2018 13:59:04 -0400 Lines: 65 Approved: news@gmane.org Message-ID: References: <5df28d28-a2f4-47cd-9da7-49c91ed6d6f4@isocpp.org> <2016044.EC7RGCoeXV@tjmaciei-mobl1> <8f3f409b-43ff-4834-a383-2a5b0c5dc66e@isocpp.org> <1700149.ojBUBa6pdX@tjmaciei-mobl1> <32c0cd10-426c-41b5-b80d-6ef300877950@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="00000000000021c1150577bb61bf" X-Trace: blaine.gmane.org 1539021431 11976 195.159.176.226 (8 Oct 2018 17:57:11 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 8 Oct 2018 17:57:11 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBDKJJPVBQMKRB5FV53OQKGQEQ4NO6SQ@isocpp.org Mon Oct 08 19:57:07 2018 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-wr1-f71.google.com ([209.85.221.71]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1g9ZmF-00030T-3e for gclcip-std-proposals@m.gmane.org; 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[209.85.220.41]) by mx.google.com with SMTPS id j137-v6sor6508563wmd.27.2018.10.08.10.59.16 for (Google Transport Security); Mon, 08 Oct 2018 10:59:16 -0700 (PDT) Received-SPF: pass (google.com: domain of hyman.rosen@gmail.com designates 209.85.220.41 as permitted sender) client-ip=209.85.220.41; X-Received: by 2002:a1c:c90f:: with SMTP id f15-v6mr4145517wmb.48.1539021555743; Mon, 08 Oct 2018 10:59:15 -0700 (PDT) In-Reply-To: X-Original-Sender: hyman.rosen@gmail.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b="R/I1duMy"; spf=pass (google.com: domain of hyman.rosen@gmail.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=hyman.rosen@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com 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:40384 Archived-At: --00000000000021c1150577bb61bf Content-Type: text/plain; charset="UTF-8" On Mon, Oct 8, 2018 at 1:40 PM Andrew Sandoval wrote: > I can argue that the current automatic / implicit conversion violates type > safety. > Automatic type conversion is everywhere in C and C++. That ship sailed decades ago. The only argument so far that I've seen for implicit conversion of bool > is because there is some existing code that would break if it changed. > You have missed the argument that conversion from non-zero to true and zero to false is nearly always what people want. -- 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/CAHSYqdah32J75_QvLYRGGr1qt6LBDOGnRGOqzBG9rEuhNC0K%3DQ%40mail.gmail.com. --00000000000021c1150577bb61bf Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
On Mon, Oct 8,= 2018 at 1:40 PM Andrew Sandoval <sandoval@netwaysglobal.com> wrote:
I can argue that the current automa= tic / implicit conversion violates type safety.

Automatic type conversion is everywhere in C and C++.
That ship sa= iled decades ago.

=C2=A0 The only argument so far that I've seen for impl= icit conversion of bool is because there is some existing code that would b= reak if it changed.

You have missed the ar= gument that conversion from non-zero to true
and zero to false is nearly= always what people want.

--
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