#include <iostream>
 
using namespace std;
 
class A {
public:
        template<typename T, typename... Args>
        void stuff(Args... args);
        void stuff(int = 0);
};
 
template<typename T, typename... Args>
void A::stuff(Args... args) {
        cout << sizeof...(args) << endl;
}
 
void A::stuff(int) {
        cout << "int" << endl;
}
 
int main() {
        A a;
        A b;
 
        a.stuff<char>();
        b.stuff();  // remove <int> kind of specialization
}

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