Scala example source code file (implicits.scala)

This example Scala source code file (implicits.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

hempty, hmap, hmap, hsome, hsome, int, int, l, plus, pos, string, super, super, t

The Scala implicits.scala source code

class Pos

class Super

object Super {
  implicit def pos2int(p: Pos): Int = 0
}  

object Sub extends Super {
  class Plus(x: Any) {
    def +(y: String): String = x.toString + y
  }
  implicit def any2plus(x: Any): Plus = new Plus(x)
}  

object Test {
  import Super._
  import Sub._
  val p = new Pos
  def f(x: Int): Int = x
  f(p+1)
}

object test2 {
  sealed trait HMap {
    def +[T](v: T) = HSome(v,this)
  }

  final case class HSome[T, L <: HMap](head: T, tail: L) extends HMap

  final object HEmpty extends HMap

  val set = HEmpty + 3 + "3"
  implicit def select[T](t: HSome[T,_]) = t.head
  implicit def selectTail[L](t: HSome[_,L]) = t.tail
  
  def foo(x: Int) = 3
  foo(set)
}

// #2180
class Mxml {

    private def processChildren( children:Seq[Any] ):List[Mxml] = {

        children.toList.flatMap ( e => {

            e match {

                case s:scala.collection.Traversable[_] => s case a => List(a)

            }

        })

    }

}