Scala case class field extraction

patterns.sc

object patterns {
  abstract class Foo
  case class Bar(val bar: Int) extends Foo
  case class Baz(val baz: String) extends Foo

  def handle(f: Foo) =
    f match {
      case Bar(i) if (i > 10) => 10
      case Bar(i) => i
      case Baz(s) => s
    }
  
  handle(new Bar(42))                             //> res0: Any = 10
  handle(new Bar(3))                              //> res0: Any = 3
  handle(new Baz("Luhrmann"))                     //> res1: Any = Luhrmann
}