Class 32

Held:

We consider *pairs, the basic data type used to build lists and other structures in Scheme. We also consider why it is useful to understand about pairs.*

Preliminaries

Overview

• Representing lists with pairs and cons cells
• Why care about the underlying representation
• Other pair structures

Related Pages

• Eboard 32 (Source)

• Reading:

• Lab:

Updates

News / Etc.

• Please try to keep the room straight.
• Exam 2 returned last night. If you didn’t get it, let me know.
• Quiz 11 returned. Some issues on l-s vs. r-s

Upcoming Work

• Reading for Wednesday: Association lists
  • Since it was ready for today, it’s still ready for Wednesday.
• No writeup for class 31.
• Writeup for class 32 due Wednesday at 10:30 p.m.
  • Exercise TBD
  • To: csc151-01-grader@grinnell.edu
  • Subject: CSC 151.01 Writeup 32 (YOUR NAMES)
• Exam 3
  • Exam due TOMORROW
  • Cover pages due Wednesday the 15th.
  • Epilogues due Wednesday the 15th.

Extra credit (Academic/Artistic)

• Convocation Thursday at 11 a.m. in JRC 101. “Work’s Provocative Future: Which Graduates Will Thrive?”

Extra credit (Peer)

Extra credit (Misc)

Other good things

• Women’s Basketball vs. Emmaus Wed at 5:00 p.m.
• Men’s Basketball vs. Emmaus Wed at 7:00 p.m.
• Swimming and Diving Saturday at 1:00 p.m.