std::vector of std::function

Question

I have the following:

  typedef std::function event_type;

  class Event : boost::noncopyable
  {
  private:
   typedef std         


        

Answer 1

You can store boost::function in the vector, provided you don't use std::find. Since you seem to need this, wrapping the function in its own class with equality would be probably the best.

class EventFun
{
  int id_;
  boost::function<...> f_;
public:
  ...
  bool operator==(const EventFun& o) const { return id_==o.id_; } // you get it...
};

Note that this requires you maintain the id_ in a sane way (eg. two different EventFuns will have different id_s, etc.).

Another possibility would be to store boost::functions with a tag the client would remember and use to identify the particular function on deleting it.