- Actor(const char* name, s4u::Host *host, double killTime, std::function<int()> code);
- Actor(const char* name, s4u::Host *host, std::function<int()> code)
+ Actor(const char* name, s4u::Host *host, double killTime, std::function<void()> code);
+ Actor(const char* name, s4u::Host *host, std::function<void()> code)