signal.h

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#pragma once
#include <forward_list>


namespace wink {
  template<class Slot>
  struct signal {

    protected:

      typedef Slot slot_type;
      std::forward_list<slot_type> _slots;

    public:


      void insertSubscriber(const slot_type& slot) {
        _slots.push_front(slot);
      }


      bool removeSubscriber(const slot_type& slot) {

        for(auto it=_slots.begin();it!=_slots.end();it++) {
          if(*it==slot) {
            _slots.erase(it);
            return true;
          }
        }
        return false;
      }

      template <class ...Args>
      void raiseEvent(Args&&... args) const {

        for(auto it=_slots.begin();it!=_slots.end();it++)
          (*it)(args...);
      }
  };
}