New Routing

gistfile1.cpp

#include <iostream>
#include <string>
using namespace std;

template <typename Child>
struct Routing
{
    Routing() = delete;
    explicit Routing(std::string s) : t(s) {}
    void Get()
    {
        static_cast<Child*>(this)->FacadeGet();
    }
    void Hello() { std::cerr << "Heloo"; }
    string t;
};

template <typename Child>
struct MaidMgr
{
    void interface()
    {
        static_cast<Child*>(this)->FacadeGet();
        CallHello();
    }
    void CallHello() {
        static_cast<Child*>(this)->Hello();
    }
    void Get() { std::cerr << "MaidMgr Get\n";
      static_cast<Child*>(this)->Hello();
    }
};

template <typename Child>
struct DataMgr
{
    void interface()
    {
        static_cast<Child*>(this)->FacadeGet();
        CallHello();
    }
    void CallHello() {
        static_cast<Child*>(this)->Hello();
    }
};

struct Facade : public MaidMgr<Facade>, public DataMgr<Facade>, public Routing<Facade>
{
    Facade() : Routing<Facade>("Whatever") {}
    void FacadeGet()
    {
        cerr << "Derived implementation " << x << "\n";
    }
    string x = "test";
};

int main()
{
    Facade d;
    d.template MaidMgr<Facade>::Get();

//    Routing<Facade> b{};
//    b.interface();
}