(titles-of-movies-satisfying database predicate)
Ex: (titles-of-movies-satisfying
our-movie-database
(lambda (movie) (= (movie-year-made movie) 1974))
⇒ ((amarcord))
Exercise 7.24: Generalize 7.23 so that any movie selector can be used:
(movies-satisfying database predicate selector)
Ex: (movies-satisfying
our-movie-database
(lambda (movie) (= (movie-year-made movie) 1974))
movie-director)
⇒ ((federico fellini))