Identifying primitive types in templates

Question

I am looking for a way to identify primitives types in a template class definition.

I mean, having this class :

template
class A{
void         


        

Answer 1

Yet another similar examples:

#include  
#include 

template
struct foo_impl
{
    void do_work()
    {
        std::cout << "0" << std::endl;
    }
};
template
struct foo_impl
{
    void do_work()
    {
        std::cout << "1" << std::endl;
    }
};

template
struct foo
{
    void do_work()
    {
        foo_impl::value>().do_work();
    }
};


int main()
{
    foo a; a.do_work();
    foo b; b.do_work();
}