Multicast function demo

example.cpp

#include <iostream>

#include "multicast.hpp"

void f(int n) {
    std::cout << "f(" << n << ")\n";
}

struct g {
    void operator ()(int n) {
        std::cout << "g::()(" << n << ")\n";
    }
};

void h(double n) {
    std::cout << "h(static_cast<double>(" << n << "))\n";
}

int main() {
    util::multifunction<void(int)> event;

    auto f_tok = event += f;
    auto g_tok = event += g();
    auto h_tok = event += h;

    event(42);

    std::cout << "\nRemoving g\n";
    event -= g_tok;
    event(23);

    std::cout << "\nRemoving h\n";
    event -= h_tok;
    event(101);

    std::cout << "\nRemoving f\n";
    event -= f_tok;
    event(97);
}