notes for csc123, 10/12/2010

Plan for midterm exam next week.  discuss topics to cover
scheme/perl/closures/higher-order programming.  basic c#.

talk about optional C# assignment on observer pattern: Halloween.

-- whatlangauge
-- give C++ poem. 
-- Talk about nature of type safety.  part II of mother knew C++
interfaces and abstract classes
look at various design patterns.  factory and abstract factory.
expression trees as lead up to visitor pattern.
- got to come up with an assignment? just an addition - say add 
sandwiches to the factory class.
polymorphic types.

make - can become makepizza or makesandwich.