Option.scala

def validateLatLong(latitude: Double, longitude: Double): Option[(Double, Double)] =
  if (latitude < -90 || latitude > 90 || longitude < -180 || longitude > 180)
    None
  else
    Some((latitude, longitude))

val foo =
  validateLatLong(49, 123) match {
    case Some((latitude, longitude)) => /* Proceed with validated data */
    case None => /* Handle case where no value is returned */
  }