[Solved] How do I re-write this code in Swift? [closed]

Question

 func pieChart(pieChart:XYPieChart!,index:Int!) ->CGFloat
 {
     let value:NSNumber = self.values[index] as NSNumber
     return value.doubleValue
 }

Accepted Answer

 func pieChart(pieChart:XYPieChart!,index:Int!) ->CGFloat
 {
     let value:NSNumber = self.values[index] as NSNumber
     return value.doubleValue
 }