28
27
ip_observer_rep (path ip2): ip (ip2) {}
29
29
ostream& print (ostream& out) { return out << " " << ip; }
31
34
void notify_assign (tree& ref, tree t);
32
35
void notify_insert (tree& ref, int pos, int nr);
33
36
void notify_remove (tree& ref, int pos, int nr);