Using Swift to unescape unicode characters, ie \u1234

Question

I have problems with special characters when using JSON in xcode 6 with swift

I found these codes in Cocoa/objective C to solve some problems converting accent but c

Answer 1

It's fairly similar in Swift, though you still need to use the Foundation string classes:

let transform = "Any-Hex/Java"
let input = "\\u5404\\u500b\\u90fd" as NSString
var convertedString = input.mutableCopy() as NSMutableString

CFStringTransform(convertedString, nil, transform as NSString, 1)

println("convertedString: \(convertedString)")
// convertedString: 各個都

(The last parameter threw me for a loop until I realized that Boolean in Swift is a type alias for UInt - YES in Objective-C becomes 1 in Swift for these types of methods.)