How to convert an Int to Hex String in Swift

Question

In Obj-C I used to convert an unsigned integer n to a hex string with

 NSString *st = [NSString stringWithFormat:@\"%2X\", n];

I tried for

Answer 1

In Swift there is a specific init method on String for exactly this:

let hex = String(0xF, radix: 16, uppercase: false)
println("hex=\(hex)") // Output: f