Convert CFString to NSString - Swift

Question

I\'m trying to write a program that will scan for available serial ports and present them in a popup menu. Why can I not take the CFString straight from the

Answer 1

As for me, I like to make extentions and use them afterwards. It seems convenient and clear to read:

Extention:

extension CFString {
    var string: String {
        return self as String
    }
}

Usage:

let specificQueryPart: [String: NSObject] = [
            kSecReturnData.string: true as NSObject,
            kSecAttrService.string: key as NSObject,
            kSecMatchLimit.string: kSecMatchLimitOne
        ]