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Re: Template inheritance
- From: Jonathan Wakely <jwakely dot gcc at gmail dot com>
- To: icegood <icegood1980 at gmail dot com>
- Cc: gcc-help at gcc dot gnu dot org
- Date: Thu, 28 Jun 2012 15:08:06 +0100
- Subject: Re: Template inheritance
- References: <34085480.post@talk.nabble.com>
On 28 June 2012 11:20, icegood <icegood1980@gmail.com> wrote:
>
> #include <cstddef>
> #include <new>
> #include <iostream>
> #include <cstdlib>
>
> class Base
> {
> public:
> ?Base(){FBase=123;}
> protected:
> ?int FBase;
> };
>
> template<typename T>
> class A : public Base
> {
> public:
> ?A(){}
> ?T FA;
> };
>
> template<typename T>
> class B : public A<T>
> {
> public:
> ?B(){}
> ?T FB;
> ?virtual void F() {std::cout <<FBase << std::endl;} // fails here
> ?inline void SetB(int vB) {FB=vB;}
> };
>
> int main()
> {
> ?B<int> VB;
> ?//
> ?VB.F();
> }
>
> - doesn't compile. A<T>::FBase ?instead of FBase solves isuue. Could it be
This is how C++ works, see
http://gcc.gnu.org/wiki/VerboseDiagnostics#dependent_base
> somehow easier, because have
> ~100 properties in Base class each of them called 100 times in B.
You could write this->FBase instead.