Class 16 Objectives

At the end of today's class you should

KNOW:

That the data definition for a hierarchy requires two data definitions that refer to each other (mutually recursive data definitions).

BE ABLE TO:

Write the data definition for a hierarchy.
Generate the template for a hierarchy.
Write functions over hierarchies.

Sample Exam Question:

Write a function update-year which consumes a name, a year, and a hierarchy for a descendant family tree, and updates the year for the named person in the hierarchy.