Example of a Swift class subscript that takes a variadic parameter and returns a tuple

classVariadicSubscriptExample

class Introspector {
  var values: Any!
  subscript(theValues: Int...) -> (sum: Int, average: Double) {
    values = theValues
      var sum = 0
      for integer in theValues {
        sum += integer
      }
      let average = Double(sum) / Double(theValues.count)
      return (sum: sum, average: average)
  }
  subscript(theValues: Double...) -> (sum: Double, average: Double) {
    values = theValues
      var sum = 0.0
      for value in theValues {
        sum += Double(value)
      }
      let average = sum / Double(theValues.count)
      return (sum: sum, average: average)
  }
}
let myIntrospector = Introspector()
let result1 = myIntrospector[1, 2, 3, 4, 5]
println("For \(myIntrospector.values), sum is \(result1.sum) and average is \(result1.average).") // Prints "For [1, 2, 3, 4, 5], sum is 15 and average is 3.0."
let result2 = myIntrospector[1.1, 2.2, 3.3, 4.4, 5.5]
println("For \(myIntrospector.values), sum is \(result2.sum) and average is \(result2.average).") // Prints "For [1.1, 2.2, 3.3, 4.4, 5.5], sum is 16.5 and average is 3.3."