EBoard 22: Randomness
Approximate overview
Administrative stuff
Introductory notes
- Make sure that your lab page shows the random language generation lab.
- Please disinfect your keyboard and mouse; there are many colds
and such going around campus.
- Happy Less Rainy Day.
- During break, I’m going to open up the deadlines for readings and
labs so that those who didn’t get them in can catch up.
Fall Break PSA
- It’s Fall Break.
- Students are tempted to do potentially dangerous things during break.
- Please get rest.
- Please take care of yourselves.
- Don’t forget to take a look at the assignment and do the reading.
Upcoming activities
Events
- Tomorrow: Scarlet and Black Swim Meet at noon.
- Sunday after break: Mentor session 4pm.
Other good things
- It’s break; not much is happening on campus.
Upcoming work
Q&A
Lab
Preparation
- Make sure that you have the correct lab page.
- Person closest to the screen is A. Other person is B.
- Make sure to have the pre-class discussion.
- Review the procedures in the lab, too.
Notes during class
- If the average of five dice is 3.5, the sum must be 5*3.5 or 17.5. Whoops.
sum-dice needs recursion.- I would appreciate it if someone would chuckle knowingly at “pair-a-dice”,
which is clearly the best procedure name ever.
- Sam doesn’t like
(if (= (play-seven-eleven) 1) ...). Why?
- Remember asking me why we write procedures with no parameters? Today’s
lab helps explain some of the reasons.
- Sam would define
heads? as (lambda () (zero? (random 2))).
Wrapping up
- If you haven’t finished lab, feel free to finish it on your own or
with a partner.
- Have a wonderful break!
- “I’ll be back!”