Welcome Parents!

We've planned the following exciting activities

• Watch the professor discuss a long, drawn-out list of administrative issues
• Watch your students ask questions!
• Watch your students take a quiz!
• Watch your students work on a project together

Overview

• Preliminaries
  • Admin.
  • Questions before the quiz. [10 minutes]
  • Quiz.
• Learning Goals
  • What is a procedure?
  • Describing procedures.
  • Anonymous procedures.
  • Anonymous procedures through lambda expressions.
  • Other kinds of anonymous procedures.
• Lab.

Admin

• Continue lab partners!
  
  • I'm probably moving to switching once per week.
  • After fall break, I may let you choose partners (but may require that you switch once per week).
• Note for students: I will not lecture after the quiz. Start the lab once you've finished the quiz.
  • So please set with your lab partner.
• I think the optional class was useful for the few folks who showed up. You can see some notes on the EBoard.
  • We won't have the optional class Thursday the 3rd, as I'll be unavailable.
  • Don't forget the mentor session Sunday night.
• Work for Monday:
  • Work on the homework assignment
  • Read Turtle Graphics
  • Do Lab writeup 7: Exercise 5b-f from the Anonymous Procedures Lab
    • Due before class on Monday.
    • Title: "CSC 151.02 Lab Writeup 7: Anonymous Procedures (NAMES)".
• A few of you have been confused about lab writeups
  • In general, due the next class. (Exceptions when the next class is the next day.)
  • You can find them in every EBoard and outline.
  • I'll work on putting them in the schedule, too.
• EC Opportunities:
  • CS Extras Thursday @ 4:30: Three Students on Student Sysadmin Work
  • CS Table next Friday (Coding the Law)
  • Football, 1pm, Saturday against Beloit
  • Soccer, 1:30pm, Saturday against Beloit
  • Orchestra, 2pm, Saturday, Sebring-Lewis or somewhere similar
  • Knitting club, Saturday at 10am. Do good and have fun!
  • Weekly discussion group on Transformative Hermaneutics of Temporal and Spatial Xenophobia and Xenophilia, James 1st Friday 7pm
  • More ...?
• Other things you might do (no EC, but possibly a good idea)
  • Get your Flu Shot
  • Swipe your P-Card at the Football or Soccer game
  • Poweshiek CARES March Thursday, Oct. 3. Meet at Drake Library at 5 p.m.
  • GHS Homecoming Parade Thursday, Oct. 3. If you've never seen a small-town homecoming parade, it's worth it.

Pre-quiz Questions

• What's it about
  • Color transformations
  • Image transformations
  • Lists
    • map, iota, make-list, list
• YOU DO NOT NEED TO KNOW APPLY
• How do you add five to every number in a list?

Old way

    (define add5 (lambda (x) (+ 5 x)))
    (map add5 (iota 100))

New way: Wait for lab

What does RGB complement do? (define rgb-complement (lambda (rgb) (rgb-new (- 255 (rgb-red rgb)) (- 255 (rgb-green rgb)) (- 255 (rgb-blue rgb)))))

What is increment? (define increment (lambda (x) (+ 1 x)))

• Only works with numbers

• To add one to each element of a list (map increment (list ....))

• What does check-drawing do?

  • Convert a drawing to an image and show the image

• What's the difference between make-list and list?

  • make-list make multiple copies of the same value. (make-list 10 "red") creates '("red" "red" "red" .... "red")
  • list just joins values into a list (list 10 "red") creates '(10 "red") (list "red" "red" "red") creates '("red" "red" "red")

• What's the difference between image-transform! and image-variant?

  • image-transform! changes the current imagej
  • image-variant makes a new image
  • both require a procedure that does something to each pixel

• How do we use drawing-hshift with map Old style (drawing-hshift drawing amnt) New style (map drawing-hshift (list-of-drawnigs) (list of amounts)) (map drawing-hshift (list d1 d2 d3) (list 3 4 5))

• What does "ilk" mean?

  • Similar things, at least in the Rebelskian dialects of English

    Quiz

• Make sure to turn off your monitor.

• Start the lab once you and your partner have finished the quiz.

Lab