C++, function pointer to the template function pointer

Question

I am having a pointer to the common static method

class MyClass
{
  private:
    static double ( *pfunction ) ( const Object *, const Object *);
    ...
};
<         


        

Answer 1

template is a template :) it's not a concrete type and cannot be used as a member. e.g. you cannot define following class:

class A
{
    template  std::vector member;
}

because template std::vector member; is something that potentially can be specialized to many different types. you can do something like this:

template 
struct A
{
 static T (*pfunction)();
};

struct B
{
 template 
 static T getT();
};

int (*A::pfunction)() = &B::getT;

here A is a specialized template and so has specialized member