My Functional Class #1

gistfile1.scala

case class AddressString(address: Address, newAddress: NewAddress) {
  private def getNTh(n: Int, f: List[String] => Boolean): String = {
    def getOnlyLastThree(string: String): List[String] = {
      if (string.split(" ").length > 3)
        string.split(" ").toList.tail
      else
        string.split(" ").toList
    }

    val a = if (f(getOnlyLastThree(address.region))) getOnlyLastThree(address.region)(n) else ""
    val b = if (f(getOnlyLastThree(newAddress.toString))) getOnlyLastThree(newAddress.toString)(n) else ""
    if (a == b) a else a + " " + b
  }

  def getFirst = {
    getNTh(0, _.size == 3)
  }

  def getSecond = {
    getNTh(1, _.size >= 2)
  }

  def getThird = {
    getNTh(2, _.size >= 1)
  }

  def toTuple = (address.region, newAddress.toString)

  def isExisting: Boolean = address.region != "" && newAddress.region != ""

}