CPSC 425 Spring 2006 
 HW 13: Datatypes and Yet More Higher Order Functions
- Do Webber exercises 9.21-9.25.  I recommend doing the chapter
7 version of 9.25 before you attempt the chapter 9 version.  If you still
can't do the chapter 9 version, try a different approach to the chapter 7
version.
 
- Read Webber Chapter 11 and do exercises 11.1-11.5.