存储任意引用的 C++ 包装类，但本身不是类模板

#include <any>

class AnyRefWrapper {
public:
    template<typename T>
    AnyRefWrapper(T& ref) : m_ref(std::ref(ref)) {}

    void* get_address() const {
        return &(std::any_cast<std::reference_wrapper<void>>(m_ref).get());
    }

private:
    std::any m_ref;
};

int main() {
    int a = 42;
    std::string b = "hello";

    AnyRefWrapper wrapper_a(a);
    AnyRefWrapper wrapper_b(b);

    std::cout << "Address of a: "<< wrapper_a.get_address()<< std::endl;
    std::cout << "Address of b: "<< wrapper_b.get_address()<< std::endl;

    return 0;
}