Polymorphic templated method

I am making some simple objects for file I/O. I want one of the member functions to be templated, but I also want it to be a pure virtual method, because the interface is defined in an abstract base class. Does anyone know how to do this? Thanks.

Code:

---

class Base
{
public:
    template<class T> virtual void foo(T a) = 0;
};

---

error C2898: 'void __thiscall Base::foo(T)' : member function templates cannot be virtual

Looks like you are stuck with:

Code:

---

template <class T>
class Base
{
public:
    virtual void foo(T a) = 0;
};

---

gg

yeah, that's what I figured...just thought I'd check though. Thanks.