Pointer to member: works in GCC but not in VS2015

Question

I\'m trying to implement a \"property\" system to convert C++ instances into JSON and vice versa. I took a part of the code from Guillaume Racicot\'s answer in this question (C+

Answer 1

If it is absolutely needed to properties be defined in User class maybe you could make use of helper templated constexpr function like:

#include 

template 
struct Property {
    constexpr Property(T Class::* const member) : m_member{ member } {}

    T Class::* const m_member;
};

template 
constexpr Property get_age_property() {
    return  Property(&T::age);
}

class User
{
public:
    int age;

    constexpr static std::tuple> properties = std::make_tuple(
         get_age_property()
    );

};

int main()
{
}

It seems to compile in webcompiler i.e. VC++ 19.00.23720.0