OwenChang

object MainX {
  println("Welcome to the Scala worksheet")
   
  sealed abstract class MyList[+T]
  case object Nil extends MyList[Nothing]
  case class Cons[T] (element: T, list: MyList[T]) extends MyList[T]
}

OwenChang

class Respond extends Service[Request, Response] with Logger {
  def apply(request: Request) = {
    try {
      request.method -> Path(request.path) match {
        case GET -> Root / "todos" => Future.value {
          val data = Todos.allAsJson
          debug("data: %s" format data)
          Responses.json(data, acceptsGzip(request))
        }
        case GET -> Root / "todos" / id => Future.value {