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Groups > comp.lang.c++ > #7712

Re: mutable vs const_cast, which is better to modify field from const function?

From Qi <no@no.no>
Newsgroups comp.lang.c++
Subject Re: mutable vs const_cast, which is better to modify field from const function?
Date 2011-07-11 09:54 +0800
Organization Aioe.org NNTP Server
Message-ID <ivdl4t$fcf$1@speranza.aioe.org> (permalink)
References <iv8s22$2sp$1@speranza.aioe.org> <5f166443-c96b-4931-8364-8ca307f15a29@x16g2000yqg.googlegroups.com> <U8GdnQkwR-88l4fTnZ2dnUVZ8qSdnZ2d@saix.net>

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On 2011-7-11 4:25, Werner Erasmus wrote:
> class SomeClass
> {
> public:
> const int* getMyInt() const
> {
> if(!myInt)
> {
> myInt = new int;
> }
> return myInt;
> }
>
> private:
> int const * mutable myInt;
> };

mutable int const * myInt;

Works


-- 
WQ

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Thread

mutable vs const_cast, which is better to modify field from const function? Qi <no@no.com> - 2011-07-09 14:19 +0800
  Re: mutable vs const_cast, which is better to modify field from const function? Narinder <narinder.claire@gmail.com> - 2011-07-09 00:20 -0700
    Re: mutable vs const_cast, which is better to modify field from const function? Qi <no@no.com> - 2011-07-09 15:50 +0800
      Re: mutable vs const_cast, which is better to modify field from const function? Narinder <narinder.claire@gmail.com> - 2011-07-09 01:36 -0700
  Re: mutable vs const_cast, which is better to modify field from const   function? Ian Collins <ian-news@hotmail.com> - 2011-07-09 19:28 +1200
    Re: mutable vs const_cast, which is better to modify field from const   function? Qi <no@no.com> - 2011-07-09 15:56 +0800
      Re: mutable vs const_cast, which is better to modify field from const     function? Ian Collins <ian-news@hotmail.com> - 2011-07-09 20:04 +1200
      Re: mutable vs const_cast, which is better to modify field from const function? Narinder <narinder.claire@gmail.com> - 2011-07-12 15:41 -0700
  Re: mutable vs const_cast, which is better to modify field from const function? SG <s.gesemann@gmail.com> - 2011-07-09 01:25 -0700
    Re: mutable vs const_cast, which is better to modify field from const function? Werner Erasmus <werasm@gmail.com> - 2011-07-10 22:25 +0200
      Re: mutable vs const_cast, which is better to modify field from const function? Qi <no@no.no> - 2011-07-11 09:54 +0800
        Re: mutable vs const_cast, which is better to modify field from const function? Werner Erasmus <werasm@gmail.com> - 2011-07-11 09:08 +0200
  Re: mutable vs const_cast, which is better to modify field from const function? Paavo Helde <myfirstname@osa.pri.ee> - 2011-07-09 03:31 -0500
  Re: mutable vs const_cast, which is better to modify field from const function? "Balog Pal" <pasa@lib.hu> - 2011-07-09 10:47 +0200
  Re: mutable vs const_cast, which is better to modify field from const function? Qi <no@no.com> - 2011-07-09 16:54 +0800

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