3.20 Survey

3.1	Basic Racket
3.2	Lists and Trees
3.3	Higher-order Functions
3.4	Rudimentary Interpreter
3.5	Extended Interpreter
3.6	Laziness and Infinite Data
3.7	Raw Web Programming
3.8	Racket Web Programming
3.9	Garbage Collectors
3.10	Type Checker
3.11	Type Inferrer
3.12	Prolog
3.13	Language Analysis the First
3.14	Analysis: Laziness
3.15	Analysis: Continuations
3.16	Language Analysis the Second
3.17	Analysis: Garbage Collection
3.18	Analysis: Type Systems
3.19	Final
3.20	Survey
3.21	Unofficial Course Evaluation the First
3.22	Unofficial Course Evaluation the Second
3.23	Official Course Evaluation