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

Swift 4 String extension

extension String {
    var unescapingUnicodeCharacters: String {       
        let mutableString = NSMutableString(string: self)
        CFStringTransform(mutableString, nil, "Any-Hex/Java" as NSString, true)

        return mutableString as String
    }
}