CSC151.01 2006S, Class 05: Symbols and Lists

Admin:
* Assigned: HW3: Reconfiguring Lists.
* Due: HW2.
* Extra credit for attending next week's convocation.
* Extra credit for attending next week's CS extra.
* Although the outline indicates some content, we'll focus on the lab today.
* Read "Numeric Values in Scheme"
* Monday: Sam will assign lab partners for the week.

Overview:
* Symbolic values.
* Lists.
* Lab.

Reflection, Notes, and More

Remember, (cons x xs) means (approximately)
  "build a new list by putting the value x and the front of the list xs"

"car" means "the first element of the list"
"cdr" means "all but the first element of the list"
  - When given a list as a parameter, cdr always returns a list

DO NOT BUILD LISTS USING QUOTE 
* You can, however, use quote to build symbols.
* '(b c) NO
* (list 'b 'c) YES