Questions

1. How would you explain the letter/envelope idiom?
2. Characterize the notion of polymorphism. Give some examples.
3. What is a canonical class? Characterize its ingredients and give an example.
4. Give a brief description of the handle/body idiom, virtual self-reference, and dynamic role switching.
5. What kinds of patterns can you distinguish? Why do you consider patterns to be of relevance?
6. Give a detailed description of the Factory pattern and also of the Observer pattern.
7. Describe the Reactor pattern. Why is it useful?
8. Give an example of a system based on event-driven computation.

draft version 0.1 (15/7/2001)