for case

gistfile1.txt

enum Media {
  case book(title: String, author: String, year: Int)
  case movie(title: String, director: String, year: Int)
  case website(urlString: String)
}

let mediaList: [Media] = [
  .book(title: "Harry Potter and the Philosopher's Stone", author: "J.K. Rowling", year: 1997),
  .movie(title: "Harry Potter and the Philosopher's Stone", director: "Chris Columbus", year: 2001),
  .book(title: "Harry Potter and the Chamber of Secrets", author: "J.K. Rowling", year: 1999),
  .movie(title: "Harry Potter and the Chamber of Secrets", director: "Chris Columbus", year: 2002),
  .book(title: "Harry Potter and the Prisoner of Azkaban", author: "J.K. Rowling", year: 1999),
  .movie(title: "Harry Potter and the Prisoner of Azkaban", director: "Alfonso Cuarón", year: 2004),
  .movie(title: "J.K. Rowling: A Year in the Life", director: "James Runcie", year: 2007),
  .website(urlString: "https://en.wikipedia.org/wiki/List_of_Harry_Potter-related_topics")
]

print("Movies only:")
for case let Media.movie(title, _, year) in mediaList {
  print(" - \(title) (\(year))")
}
  
/* Output:
Movies only:
 - Harry Potter and the Philosopher's Stone (2001)
 - Harry Potter and the Chamber of Secrets (2002)
 - Harry Potter and the Prisoner of Azkaban (2004)
 - J.K. Rowling: A Year in the Life (2007)
*/