C++11 Signals

signals.cpp

#ifndef __signals_h__
#define __signals_h__

#include <list>
#include <memory>
#include <iostream>
#include <functional>

namespace signals {
    template<typename... Values> class Signal {
    private:
        std::list<std::function<void(Values...)>> fns;
    public:
        void bind(std::function<void(Values...)> fn) {
            fns.push_back(fn);
        }
        void trigger(Values... values) {
            for (auto it = fns.begin(); it != fns.end(); ++it) {
                (*it)(values...);
            }
        }
    };
}

// Example
signals::Signal<int, int> onEvent;

onEvent.bind([](int a, int b) {
    std::cout << "Event triggered " << a << ", " << b << "\n";
});

onEvent.trigger(10, 20);

#endif

nice little signal handler ... i've considered writing something like that myself and googling for inspiration I stumbled upon your solution. Just one little critic: Given that you use std::list and c++11 features anyway I'd rather write the for loop as:
for (auto fn : fns) fn(values...);
makes it a lot more compact and readable.