C++ template specialization without default function

Question

I have the following code that compiles and works well:

template
T GetGlobal(const char *name);

template<>
int GetGlobal(cons         


        

Answer 1

If you don't implement it, you'll at least get a linker error. If you want a compile-time error, you could do this with class templates:

template
struct GlobalGetter;

template<>
struct GlobalGetter {
  static int GetGlobal(const char *name);
};

template<>
struct GlobalGetter {
  static double GetGlobal(const char *name);
};

template
T GetGlobal(const char *name)
{
  return GlobalGetter::GetGlobal(name);
}