非 static 成员 function 模板的地址

Question

I'm trying to understand if it's possible to take the address of a non-static member function template. Below does not work and using &sz<int> results in other errors. What is the right way to get the address of non static member function template?

311 struct XYZ
312 {
313    template <typename Z>
314    void sz()
315    {
316    }
317 
318    void func()
319    {
320       auto z = sz<int>;
321    }
322 };

results in an error

vs.cc:320:16: error: reference to non-static member function must be called; did you mean to call it with no arguments?
      auto z = sz<int>;

Answer 1

It does not matter that void sz() is a template because sz<int> is a member function. There is no notion of "address" in C++ - this is an implementation detail. What you can have is a pointer to member function , and the syntax for it is:

auto z = &XYZ::sz<int>;

To call it inside func() , you need the following syntax:

(this->*z)();