#unsafepointer

[devmobileapp]

Here is a Swift snippet that iterates through the bytes of an NSData and returns a string with hex. It also illustrates how to use ‘enumerateByteRangesUsingBlock’ to step through each byte in NSData.

   func asHex(data: NSData) -> String {        var resultAsHex: String = ""        data.enumerateByteRangesUsingBlock({ (bytes, range, stop) -> Void in            var chars = UnsafePointer<UInt8>(bytes)            for i in 0...range.length-1 {                resultAsHex += String(format: "%02x", UInt8(chars[i]))            }        })        return resultAsHex    }