How to pass a function pointer that points to constructor?

Question

I\'m working on implementing a reflection mechanism in C++. All objects within my code are a subclass of Object(my own generic type) that contain a static member datum of ty

Answer 1

Using variadic templates you can create a wrapper which will turn the constructor into a functor.

#include <utility>

template <typename T>
struct BindConstructor{
    template<typename... Args>
    T operator()(Args...args)const{
        return T(std::forward<Args>(args)...);
    }
};


struct Foo {
    Foo(int a, int b):a(a),b(b){}
    int a;
    int b;
};

template <typename Fn>
auto Bar(Fn f){
    return f(10,20);
}

int main(){
    Foo foo = Bar(BindConstructor<Foo>());
}

https://godbolt.org/z/J6udk7