220 38064 <2b9bb4cc-2cd9-4d27-a2b5-21692bdb333e@isocpp.org> article Path: news.gmane.org!.POSTED!not-for-mail From: jsaintmartin356@gmail.com Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: pseudo constness Date: Fri, 11 May 2018 08:46:08 -0700 (PDT) Lines: 146 Approved: news@gmane.org Message-ID: <2b9bb4cc-2cd9-4d27-a2b5-21692bdb333e@isocpp.org> References: <1519283315.58210.23.camel@gmail.com> <0a7e7e42-aa28-4632-8e66-56b0633755ba@isocpp.org> <27b5c95c-5b44-4089-bb14-b2d1b806093b@isocpp.org> <4b81b3b8-5def-4003-b073-89af676e837a@isocpp.org> <34d1dde0-b9fd-4565-8ebe-a1b1936ab96d@isocpp.org> <5262af56-c631-4c62-954c-1a2b90904319@isocpp.org> <546e86f3-ab4e-4e8c-b163-0059910744cb@isocpp.org> <67e1c1c7-2194-473b-9bfc-de4f6ffbdfd4@isocpp.org> <5e4668bb-1653-49ef-a1bb-9a74081d1cab@isocpp.org> <40fc303c-a40e-493d-a62a-2d030e0a4d57@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_10619_1716645883.1526053568259" X-Trace: blaine.gmane.org 1526053443 29523 195.159.176.226 (11 May 2018 15:44:03 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 11 May 2018 15:44:03 +0000 (UTC) To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBD2KVY7D7YJBBQPV23LQKGQEM3M552Q@isocpp.org Fri May 11 17:43:59 2018 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-vk0-f71.google.com ([209.85.213.71]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1fHAD9-0007YZ-4b for gclcip-std-proposals@m.gmane.org; Fri, 11 May 2018 17:43:59 +0200 Original-Received: by mail-vk0-f71.google.com with SMTP id 196-v6sf4132245vko.21 for ; Fri, 11 May 2018 08:46:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:message-id:in-reply-to:references:subject:mime-version :x-original-sender:reply-to:precedence:mailing-list:list-id :list-post:list-help:list-archive:list-subscribe:list-unsubscribe; bh=7KsMZCj6Y+CVqXBLfsrFqQRW9pGg75AWDRs4z1no88w=; b=VorYNSLggWMz/WMkIDyoATX4Q5/VbTShmxz6Q2pNICPrFSSbrUtLJktr8sfa2bn2OH 0MYPsdv6uCEPbPd6OxYJMownXMjRkQiGXKS/rpgFuopsXJdFYHX5Rz8wwkMp6TsiAZsD ybB1jn5PwOWbW7Zn+3+4sn0kZgjH8h/0MPVvPbHVA/jjNTQnaX6vgtZLJrd4Tk9Ot1Yd +miiHa1ekdcswFzwS0CDtzeSQSFxvHhkKfVa+pbaJ66N54eQNAQXRSC+XVdsxB9cmMJs HrV7zuiGFNpoCO/DOAI3Oo154thQFUfw+INhJ+D1xbCXGHbBxFud/lWW87EjXqus7dyM QEqA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:message-id:in-reply-to:references:subject:mime-version :x-original-sender:reply-to:precedence:mailing-list:list-id :list-post:list-help:list-archive:list-subscribe:list-unsubscribe; bh=7KsMZCj6Y+CVqXBLfsrFqQRW9pGg75AWDRs4z1no88w=; b=h7HYoxcinD14IWgjG59IGjWnkoV6p+3hHYkZe2Va3BTGv68CSHpnRnZTOxfl/2sVkL rXONwG0eDVJd5KA8YFTg3ceGm3dM24P1Q1P9zk97vGlzlkH9nVn4rixLARkdeX3bm1mj kz+X5/772TO2wTbzdAgfJz9sg60v3/ZTH/Dn5pQlky0nHdtFZjNhsGRAPruQ3uJcbFf3 PktZNq7OUGvktgQDGOD4W4ul9vkUnQPSJVS9zQWdVBjdxAIRGVhLPPchS2jj3Cut7GMb H7HHHMCEk4KMXLXp5wgifswdixoacDv4q9pEFm9R3dZ7LMvPLLiNEDLpK36dHiPzb2vn hsrw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:message-id:in-reply-to:references :subject:mime-version:x-original-sender:reply-to:precedence :mailing-list:list-id:x-spam-checked-in-group:list-post:list-help :list-archive:list-subscribe:list-unsubscribe; bh=7KsMZCj6Y+CVqXBLfsrFqQRW9pGg75AWDRs4z1no88w=; b=PMN7mRbdgHIjQxVzwNTApCVpcpsEQHqqCwinVEKCkdCd5781Va6tLPwFeMjXzs4+s6 BXvWwa/MArFKk7sHIjV/PzMbUdQtw9cEnDvphAn9pf/X3JlGc8smStJfHqYJINR7JJuC Ox9i1kjSQW00rPzZKk8+Ug03Nfmumv9qxONanZ2MtV7J4sdx1vh/vfNbeU6mKJblUWI0 Xde+lSZAvMh3e9iPeV7NaeFrHmdE1AIx4HqbXmRNtXqXWJHvmX4WbTSsQEErGvClNuH1 q+dw6TqyHH2gHiCS0YOAJzLhNtHkGaF9pBisGhpiWOR6fDkRalTlq0gr2s6+nBi/BbJD IsxQ== X-Gm-Message-State: ALKqPwfL4KGNh1CVFtwElc5IAcghlDcN6c+eO+XJz8yBepEBWfUbWIfv xsuB1lPxLw2YSSGcS53uZ5hpUw== X-Google-Smtp-Source: AB8JxZo75graS1rcknSOEfhsJdThp9bIuw3pLjW37yPno60p9SYFpFOxvzNxCXe8EKZp67fJiWNyTg== X-Received: by 2002:a1f:b4d2:: with SMTP id d201-v6mr1176263vkf.94.1526053569968; Fri, 11 May 2018 08:46:09 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 2002:a1f:3f50:: with SMTP id m77-v6ls5446026vka.3.gmail; Fri, 11 May 2018 08:46:09 -0700 (PDT) X-Received: by 2002:a1f:3686:: with SMTP id d128-v6mr277762vka.7.1526053568884; Fri, 11 May 2018 08:46:08 -0700 (PDT) In-Reply-To: X-Original-Sender: jsaintmartin356@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:38064 Archived-At: ------=_Part_10619_1716645883.1526053568259 Content-Type: multipart/alternative; boundary="----=_Part_10620_1998300706.1526053568260" ------=_Part_10620_1998300706.1526053568260 Content-Type: text/plain; charset="UTF-8" On Tuesday, March 6, 2018 at 8:38:44 PM UTC+1, Jake Arkinstall wrote: > > On 6 Mar 2018 19:22, > wrote: > > I don't care about Thread Safe Stuff. > > > You want to submit a proposal to people who do. I recommend you start > caring about thread safety. > okie : added throw and a mutex #include class Integer { public : static std::mutex le_mutex; Integer (size_t s) throw (): val_ (s) {} ~Integer () {} Integer (const Integer& i) throw () : val_ (i.val_) {} Integer& operator = (const Integer& i) throw () {val_ = i.val_; return *this;} bool operator == (const Integer& i) throw () {return (val_ == i.val_?true:false);} bool operator != (const Integer& i) throw () {return !operator == (i);} void write (std::ostream& os) const throw () { os << val_; } void write_next (std::ostream& os) const throw () { le_mutex.lock (); me_stat = *this; me_stat++; me_stat.write (os); le_mutex.unlock (); } Integer& operator ++ (int) throw () { val_++; return *this; } private : static Integer me_stat; size_t val_; }; std::mutex Integer::le_mutex; Integer Integer::me_stat (0); int main (int argc, char* argv []) { Integer i (7); std::cout << "i == "; i.write (std::cout); std::cout << std::endl; std::cout << "i next == "; i.write_next (std::cout); std::cout << std::endl; std::cout << "i again == "; i.write (std::cout); std::cout << std::endl; } -- 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/2b9bb4cc-2cd9-4d27-a2b5-21692bdb333e%40isocpp.org. ------=_Part_10620_1998300706.1526053568260 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


On Tuesday, March 6, 2018 at 8:38:44 PM UTC+1, Jak= e Arkinstall wrote:
On 6 Mar 2018 19:22, <jsaintm...= @gmail.com> wrote:
I don't care about Thread Safe Stuff.

You want to submit a prop= osal to people who do. I recommend you start caring about thread safety.

okie : added throw and a mutex

=C2=A0= #include <mutex>

=C2=A0 class Integer {
=C2=A0 public :=C2=A0=C2=A0=C2=A0 static std::mutex le_mutex;
=C2=A0=C2=A0=C2=A0 Integ= er (size_t s) throw (): val_ (s)=C2=A0 {}
=C2=A0=C2=A0=C2=A0 ~Integer ()= {}
=C2=A0=C2=A0=C2=A0 Integer (const Integer& i) throw () : val_ (i= ..val_)=C2=A0 {}
=C2=A0=C2=A0=C2=A0 Integer& operator =3D (const Inte= ger& i) throw () {val_ =3D i.val_; return *this;}
=C2=A0=C2=A0=C2=A0= bool operator =3D=3D (const Integer& i) throw () {return (val_ =3D=3D = i.val_?true:false);}
=C2=A0=C2=A0=C2=A0 bool operator !=3D (const Intege= r& i) throw () {return !operator =3D=3D (i);}

=C2=A0=C2=A0=C2=A0= void write (std::ostream& os) const throw () {
=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0 os << val_;
=C2=A0=C2=A0=C2=A0 }
=C2=A0=C2=A0=C2= =A0 void write_next (std::ostream& os) const throw () {
=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0 le_mutex.lock ();
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 me_s= tat =3D *this;
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 me_stat++;
=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0 me_stat.write (os);
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 le= _mutex.unlock ();
=C2=A0=C2=A0=C2=A0 }
=C2=A0=C2=A0=C2=A0 Integer&= ; operator ++ (int) throw () {
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 val_++;=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return *this;
=C2=A0=C2=A0=C2=A0 }
= =C2=A0 private :
=C2=A0=C2=A0=C2=A0 static Integer me_stat;
=C2=A0=C2= =A0=C2=A0 size_t val_;
=C2=A0 };

=C2=A0 std::mutex Integer::le_mu= tex;
=C2=A0 Integer Integer::me_stat (0);


=C2=A0 int main (in= t argc, char* argv []) {
=C2=A0=C2=A0=C2=A0 Integer i (7);
=C2=A0=C2= =A0=C2=A0 std::cout << "i =3D=3D ";
=C2=A0=C2=A0=C2=A0 i= ..write (std::cout);
=C2=A0=C2=A0=C2=A0 std::cout << std::endl;
= =C2=A0=C2=A0=C2=A0 std::cout << "i next =3D=3D ";
=C2=A0= =C2=A0=C2=A0 i.write_next (std::cout);
=C2=A0=C2=A0=C2=A0 std::cout <= < std::endl;
=C2=A0=C2=A0=C2=A0 std::cout << "i again =3D= =3D ";
=C2=A0=C2=A0=C2=A0 i.write (std::cout);
=C2=A0=C2=A0=C2= =A0 std::cout << std::endl;
=C2=A0 }
=C2=A0

--
You received this message because you are subscribed to the Google Groups &= quot;ISO C++ Standard - Future Proposals" group.
To unsubscribe from this group and stop receiving emails from it, send an e= mail to std-proposa= ls+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/2b9bb4cc-2cd9-4d27-a2b5-21692bdb333e= %40isocpp.org.
------=_Part_10620_1998300706.1526053568260-- ------=_Part_10619_1716645883.1526053568259-- .