EBoard 14: Lists, continued

Warning This class is being recorded.

Approximate overview

• Administrivia
• About the SoLA
• Questions
• Lab

Administrivia

• Extra copies of the mentor session handout are in the back of the room.
• Reminder: Mentor sessions are an opportunity to extend your learning (and, on occasion, get practice for SoLAs). They are not a place for homework help.
• Reminder: Individual tutors are available (free). I will likely be recommending individual tutors for students after I’m done grading the SoLA.
• The SoLA will have only six problems; neither tracing nor collaboration will appear on the SoLA.
  • I will keep giving tracing quizzes until everyone has passed them.
  • I will give you the opportunity to redo your collaboration LA if you don’t pass it. (Sorry for the delay in grading it.)
• There is a “Sample LA” on Gradescope. That’s intended for you to be able to see the time counter and other aspects of online LAs.
• If you have parents visiting for family weekend, you are welcome to bring them to class on Friday. (Let me know in advance in case I have to find chairs.)

Upcoming Token activities

Academic

• CS Table, Tomorrow, Noon, Day PDR.
• CS Extras, Thursday, 4:15 pm, Science 3821

Cultural

Peer

• Football vs. Lawrence, Saturday, 1pm

Wellness

Misc

Other Good Things

Upcoming work

• Tuesday night: Reading (may be complicated; do the best you can)
• Wednesday morning: Today’s lab due (but we’ll get it turned in today)
• Thursday night: SoLA 1 due

Questions

Ask questions. It’s part of self gov. If you have questions, others likely do, too.

On administrative stuff

On cut and compose

On “the big three”

Lab

Person closest to the board is A. Person furthest from board is B.

Make sure to talk to your partner about work habits, knowledge, etc.

(Sam wonders if anyone is watching this in recording form.)

What’s the difference between cut and section (which we saw in the reading)? They seem similar.

Mostly just surface syntax. Both build a new procedure by filling in some of the parameters of an extant procedure.

(cut (circle <> "solid" "blue"))

(section circle <> "solid" "blue")

cut has the advantage that the expression you’re cutting is a bit more obvious.

section has fewer parens and doesn’t break order of evaluation.

Congratulations! You are the first class to get section.

What’s happening on exercise 4?

Think about what reduce does.