First,I saw Youtube video explain in article Concepts Extending C++ Templates For Generic Programming".I thought that how to implemented generic type with template?,but an article was explained an concept extend a iterators for container classes.Speaker show example by find member function on a container classes(Vector,List,etc.)
Second,Problems base classes A,B have same name of member function.More Exceptional C++ Book by Herb Sutter using name of problems "Siames Twin Problem".If 2 base classes same a name of member function,We will separate class by declares new virtual member function overrides the inherited version to call a new member function.
#Wrote at Kanthalak,Srisaket.
#Some a solutions has a bug on the book.You should correct it.

