Scala Option Type Pattern matching

ScalaOptionTypePatternMatching.scala

// Scala
// pattern matching in Option Type
val usernameOpt: Option[String] = Some("gary")

usernameOpt match {
    case Some("gary") => println("matched gary!")
    case Some("peter") => println("matched peter!")
    case Some(username) => println("found ${username}, but no username is matched")
    case None => println("No username is found")
}