Tuple2, Tuple3, ..., Tuple22

Scala tuple combines a fixed number of items

Tuple is immutable

Tuple can hold objects with different types but they are also immutable

object Demo
{
  def main(args : Array[String])
  {
    // create tuple
    var a = ("Lin", 39)
    var b = Tuple2("Lin", 39)

    // access tuple
    println(a._1+" "+a._2)

    // swap
    println(a.swap) // 39, Lin
  }
}
		

Tuple2