object extractor {
  class Article(val header: String, val text: String, val footer: String)
  object Article {
    def unapply(obj: String): Option[(String, String, String)] = {
        val parts = obj.split("\n")
        if ( parts.length == 3) {
            Some(parts(0), parts(1), parts(2))
        } else {
            None
        }
    }
  }
  "My text\nIt is description.\nAuthor is me" match {
    case Article(h,t,f) => println(s"$h;$t;$f")
    case _ => println("None :( ")
  }                                               //> My text;It is description.;Author is me

}