Question

I have a template class which has a static pointer-to-member, like this:

template<class T, T* T::*nextptr> class Queue {     T* head;     T* tail;     static T* T::*pnext; }; 

My question is how to write the initializer of the static pointer-to-member. I tried the obvious case:

template<class T, T* T::*nextptr> T* Queue<T, nextptr>::*pnext(nextptr); 

But that didn’t work. Any idea?

Answer 1

Queue<T, nextptr>::pnext is declared as type T* T::*, so it should look like this:

template<class T, T* T::*nextptr> T* T::* Queue<T, nextptr>::pnext(nextptr);