Guided Practice 6.3: authors-of-expensive-books

Using a HOF, write a function authors-of-expensive-books that takes a price and a list of books, and returns the list of all the authors of books whose prices are greater than the given price.

Use the data definition for BookStatus from Examples/04-2-books.rkt.

[ANSWER]


Last modified: Wed Sep 6 22:20:54 Eastern Daylight Time 2017