Generic Signal

template <typename T>
class Signal
{
public:
    void dispatch(T * e)
    {
        //copy dispatch list in case a listener remove itself
        std::vector<std::function<void(T*)>*> dispatch = mListeners;
        std::vector<std::function<void(T*)>*>::iterator it;
        for(it = dispatch.begin(); it != dispatch.end(); ++it)
        {
            (*(*it))(e);
        }
    };

    void addListener(std::function<void(T*)> * listener)
    {
        mListeners.push_back(listener);
    };

    void removeListener(std::function<void(T*)> * listener)
    {
        std::vector<std::function<void(T*)>*>::iterator it;
        for(it = mListeners.begin(); it != mListeners.end(); ++it)
        {
            if((*it) == listener)
            {
                it = mListeners.erase(it);
                break;
            }
        }
    };
private:
    std::vector<std::function<void(T*)>*> mListeners;
};