Attempt two at coming up with decorators

c++-simpler-decorators.cpp

#include <iostream>
#include <unordered_map>
#include <string>

#define DCLASS(cpp_class) \
    public std::unordered_map<std::string, void (cpp_class::*)(int)> s_atomics;
    // note, "int" would actually be a datagram iterator

#define ATOMIC(field_name, cpp_class, cpp_fn) \
    cpp_class.s_atomics[field_name] = cpp_fn;

class Foo {
    DCLASS(Foo)


    void Fizz(int);
};

ATOMIC("fizz", Foo, Foo::Fizz)
void Foo::Fizz(int a) {

    // do stuff, for example:

    std::cout << a << std::endl;
}


int main()
{
    Foo* k = new Foo();
    k->s_atomics["fizz"](3);
}