ADT.scala

/**
 * A simple look at ADT-style code in place of classical objects in Scala.
 *
 * import ADT.Person._
 * val p = create("Chris", "Lewis")
 * println(firstName(p))
 */
object ADT {
  
  class Person private (private val firstName : String, private val lastName: String)
  
  object Person {
    def create(firstName: String, lastName: String) = new Person(firstName, lastName)
    def firstName(p: Person) = p.firstName
    def lastName(p: Person) = p.lastName
  }
  
}