Scala example source code file (bug1357.scala)

This example Scala source code file (bug1357.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

binarytree, bt, bt, h, main, nonemptycons, nonemptycons, option, some, t, t, tuple2, tuple2, unit

The Scala bug1357.scala source code

object NonEmptyCons {
  def unapply[H, T](c: (H, T)): Option[(H, T)] = Some(c)
}


object Main {

  type BT[+H, +T <: Tuple2[Tuple2[H, T], Tuple2[H, T]]] = Tuple2[H, T]
  
  // type T = Tuple2[String,String]
  type BinaryTree[+E] = BT[E, T forSome { type T <: Tuple2[BT[E, T], BT[E, T]] }]

  def foo[E](tree: BinaryTree[E]): Unit = tree match {
    case NonEmptyCons(_, tail) => {
      tail match {
        case NonEmptyCons(_, _) => {
        }
      }
    }
  }
}