CSC151 2010S, Class 37: Pairs and Pair Structures

Overview:
* Less than five minutes on pairs.
* Q&A.
* Lab.

Admin:
* Reading for Tuesday: Trees and Tree Structures.
* Are there questions on assignment 7?
* EC for attending the new art gallery exhibit
* EC for one event in the Rosenfield Poverty symposium this week
  * There's even a lunch today on "careers in poverty" (which just sounds wrong)

Question: Does our procedure for number 7 have
to work for every size image?
* No, but make it clear in your preconditions what sizes it works for.
Question: Do you want six P's for all of our procedures?
Answer: Yes.