# Overloading, Constructors and Lifetime

First, we will look at function and method overloading, including
overloading of constructors and overloading on reference kinds. We
will also touch the topic of object lifetime (which considers the
question of when exactly is an object valid and can be used) and
ownership (controlling the lifetime of ‘subordinate’ objects, e.g.
elements in a container).

Demonstrations:

 1. ‹art›      – overloading basics, with books and paintings
 2. ‹numbers›  – a list of numbers which remember their type
 3. ‹refs›     – overloading with references
 4. ‹pool›     – ownership and indirect references

Elementary exercises:

 1. ‹diameter› – basic function overloading (circle diameter)
 2. ‹circle›   – same story, but with constructors
 3. ‹index›    – access elements of different types using indices

Free exercises:

 1. ‹complex›  – complex numbers and function overloading
 2. ‹???›      – … references again?
 3. ‹search›   – binary search tree with a pool of nodes

Graded exercises:

 1. ‹format›   – method overloading 101
 2. ‹least›    – return a least element without making copies
 3. ‹area›     – geometry with function and ctor overloads
 4. ‹zipper›   – ‹const› method overloading on a zipper
 5. ‹rpn›      – postfix arithmetic with more overloading
 6. ‹eval›     – infix evaluation with a node pool