class Pair<K, V>(val first: K, val second: V) {  // 1
  operator fun component1(): K {
    return first
  }

  operator fun component2(): V {
    return second
  }
}

fun main() {
  val (num, name) = Pair(1, "one")             // 2

  println("num = $num, name = $name")
}