Date	Description
September 24	Overview & Racket intro slides lec1.rkt code
September 26	Racket intro; Lists Scheme basics (notes) lec2.rkt code
September 29	Lists and functions lec3.rkt code
October 1	Lists, functions, let Recursion patterns (notes) lec4.rkt code
October 3	let, let*; iteration patterns; tail recursion; function parameters lec5.rkt code
October 6	Higher-order functions, lambda lec6.rkt code
October 8	simultaneous recursion, letrec, etc. lec7.rkt code
October 10	Lambdas and closures lec8.rkt code
October 13	Environments and execution. Whiteboard pix: 1 2 3
October 15	Environments and closures. Whiteboard pix: 1 2
October 17	Lazy evaluation, streams, and memos slides notes lazy.rkt code
October 20	Promises, streams, and memos Whiteboard pix: 1
October 22	Racket structs, implementing programmings, interpreters, hw5 slides code
October 24	Interpreters, hw5 (concl.) additional code
October 27	Interpreters/MUPL wrapup
October 29	MUPL/hw5; Ruby intro slides; Sample code: Rat.rb, silly.rb
October 31	Ruby intro (cont.) terminal output
November 5	Ruby containers, blocks, and procs slides terminal output
November 7	Ruby: duck typing, inheritance, mixins, and modules slides; Sample code: Points.rb
November 10	Ruby inheritance and mixins inherit.rb
November 12	Parsers, scanners, grammars, and derivations slides
November 14	Regular expressions and scanners
November 17	Scanners (concl.)
November 19	Grammars and parsing slides
November 21	class canceled
November 24	LL grammars and top-down parsing; grammar hacking slides
November 26	Grammars and parsing (concl.)
December 1	Memory management: reference counting overview   lecture notes
December 3	Memory management (cont.): garbage collection
December 5	Garbage collection (concl.); Course wrapup