variadic function template without formal parameters

Question

This is what I\'m trying to do:

// base case
void f() {}

template 
void f() {
             


        

Answer 1

Another way is turning the non-template function f into a variadic template function which accepts zero or more template arguments (the other f requires one or more template arguments). Then to avoid ambiguity, SFINAE away this template function when the number of arguments is not zero. Well, a code is better than 1000 words:

#include 

template 
typename std::enable_if::type f() {
}

template 
void f() {
    // do something with T
    f();
}