Unit VI: Recursion and Templates
- Notes for class VI.1: Recursion
- Notes for class VI.2: Templates
- From class VI.1
- From class VI.2
Recursion is not really covered in the textbook in any detail.
You can find some of the material on templates in Chapters 6 and 7 of
A good source on the standard template library is http://www.cppreference.com/index.html.