CSC151.01 2015S, Class 09: Side Effects: Images, Output, and More

New partners!
- Grab a card. Read it. Figure out where your are supposed to sit.
- Drop the card in the jar.
- Move to your new position.
- Introduce yourself to your new partner.

Overview

Preliminaries

We've seen more DrRacket crashes this semester than in the past few years combined. And we're not sure why.
- Save regularly!
- Save a backup!

Assignment 3.
- Due TONIGHT at 10:30 p.m.
- Don't forget the prologue and epilogue!
Exam 1 to be distributed tomorrow
Lab writeup for lab 9 (today), exercise 3a: http://bit.ly/151-2015S-lab09
Reading for Wednesday:
- Testing Your Procedures

Wednesday, February 4, 12:00 noon, JRC 101, Scholars' Convication: "The Fight for Economic Justice from the Streets of Chicago" by Virginia Parks.
Any other event in this Rosenfield symposium.
Thursday extra this week.
Friday, February 6, 12:00 noon, Science 3821, CS Table, Summer Research Opportunities for CS Students
TEDx Grinnell, sometime in February.

Julia's radio show, "The Hot Box". Wednesday night/Thursday morning 1:00-2:00 a.m. Next week's theme might be Summertime
Swimming, Conference Championships, February 13-15, The Osgood
Track and Field, Saturday at 10 a.m., the Bear Fieldhouse

How do I know whether my partner submitted the lab?

Ask him/her/zir. I'll also send out a summary of grades once each week starting this weekend.

I didn't expect DrRacket to crash and corrupt my files. What do I do?

I handle this on a case-by-case basis.

When will we be able to use DrRacket+GIMP on our own computers?

After this weekend, I hope.

Model of functions: Take an input, compute an output, don't change the input.
Today: Undermine that model. Take an input, do something, sometimes change the input.
Generating text on the screen.