Guided Practice 5.4: inventory-total-copies-on-hand

Design the following function, using the HOF strategy with lambda:

inventory-total-copies-on-hand : ListOfBook -> NonNegInt
GIVEN: a list of books
RETURNS: the total number of copies on hand

Use the data definition of Book from Guided Practice 5.3.


Last modified: Sat Oct 10 13:33:46 Eastern Daylight Time 2015