Date	Description
September 28	Overview & Racket intro slides demo transcript
September 30	Racket intro; Lists Racket basics (notes) code
October 3	Lists and functions code
October 5	Lists, functions, let, let* code
October 7	tail recursion; function parameters; higher-order functions (map, filter) code
October 10	Functions as values, lambdas code
October 12	Higher-order functions; intro to environments and execution code
October 14	Closures and environments code
October 17	Closures and environments (trace) Board pix: defs env more env
October 19	More examples closures, environments
October 21	Lazy evaluation, streams, and memos slides notes lazy.rkt code
October 24	Promises, streams, and memos
October 26	Racket structs, implementing interpreters slides code
October 28	Interpreters, hw5 more code
October 31	MUPL/hw5 (concl.); Ruby intro slides
November 2	Ruby intro (cont.); code: silly.rb, Rat.rb terminal output
November 4	Ruby intro (concl.); containers, blocks, and procs slides terminal output
November 9	Ruby: duck typing, inheritance, mixins, and modules slides; code: Points.rb inherit.rb
November 14	Parsers, scanners, grammars, and derivations slides
November 16	Regular expressions and scanners
November 18	Scanners (concl.)
November 21	Scanners (concl.) Grammars and parsing slides
November 23	Grammars, ambiguity
November 28	LL grammars and top-down parsing; grammar hacking slides
November 30	Grammars and parsing (concl.)
December 2	Memory management: reference counting overview   lecture notes
December 5	Memory management (cont.): garbage collection
December 7	Garbage collection (concl.)
December 9	Course wrapup