example-data.scala

case class Book(
  id: Int, name: String, authors: List[String], rating: Double)

val books = List(
  Book(1, "The Pragmatic Programmer", 
    List("Andrew Hunt", "Dave Thomas"), 4.3), 
  Book(2, "Lean Startup", List("Eric Ries"), 4.5), 
  Book(3, "Clean Code", List("Robert C. Martin"), 3.1), 
  Book(4, "Agile Software Development, Principles, Patterns, and Practices",
    List("Robert C. Martin"), 4.5),
  Book(5, "From Zero to One",
    List("Peter Thiel", "Blake Masters"), 4.7)
)