package fp101.tp03.option
object ExerciceOptionCreator {
/**
*
* Our own simplified implementation of Option type
*
*
*/
trait MyOption[+T] {
def get: T
/**
*
* Method to implement here
*
* Note: U :> T says that B type parameter must be a supertype of T
* hint: implements the methods of MySome and MyNone before
*/
def getOrElse[U >: T](e: U): U = ???
def isEmpty: Boolean
}
class MySome[T](x: T) extends MyOption[T] {
def get: T = ???
def isEmpty: Boolean = ???
}
object MySome {
def apply[T](e: T): MySome[T] = ???
}
object MyNone extends MyOption[Nothing] {
def get = ???
def isEmpty: Boolean = ???
}
}
