Swift 2 base64 Encoding Output Results

Question

Swift 1.2

    let apiLoginString = NSString(format: "%@:%@", API_USERNAME, API_PASSWORD);
    let apiLoginData: NSData = apiLoginString.dataUsingEncoding(NSUTF8StringEncoding)!;
    var base64ApiLoginString = apiLoginData.base64EncodedStringWithOptions(nil);

Swift 2

    let apiLoginString = NSString(format: "%@:%@", API_USERNAME, API_PASSWORD);
    let apiLoginData: NSData = apiLoginString.dataUsingEncoding(NSUTF8StringEncoding)!;
    var base64ApiLoginString = apiLoginData.base64EncodedStringWithOptions(NSDataBase64EncodingOptions());

These two approaches give different results. In Swift 2 we can no longer go through nil;

apiLoginData.base64EncodedStringWithOptions(nil);

I also tried going in NSDataBase64EncodingOptions.Encoding64CharacterLineLengthin Swift 2. But the results are still different

Any thoughts?

UPDATE 2: this is not a problem with Swift 1.2 or Swift 2. Oddly enough, these 2 print different results .. What is F !!

UPDATE 3: It turns out that, as Martin pointed out, I have an invisible character in my API_USERNAME variable

class RequestHelper: NSObject {
static var API_USERNAME: NSString = "⁠⁠⁠abc";
static var API_PASSWORD: NSString = "123";
static var USERNAME: NSString = "abc"
static var PASSWORD: NSString = "123"


class func signUpUser() {
    //Base64
    var loginString = NSString(format: "%@:%@", USERNAME, PASSWORD);
    var loginData: NSData = loginString.dataUsingEncoding(NSUTF8StringEncoding)!;
    var base64LoginString = loginData.base64EncodedStringWithOptions([]);

    print("BASE 64 \(base64LoginString)");//RESULT YWJjOjEyMw==

    let apiLoginString = NSString(format: "%@:%@", API_USERNAME, API_PASSWORD);
    let apiLoginData: NSData = apiLoginString.dataUsingEncoding(NSUTF8StringEncoding)!;
    var base64ApiLoginString = apiLoginData.base64EncodedStringWithOptions([]);

    print("BASE 64 \(base64ApiLoginString)");// RESULT IS 4oGg4oGg4oGgYWJjOjEyMw==
  }

Answer 1

, Swift 2.0 Swift 2.0 - "" " UIUserNotificationType,
NSDataBase64EncodingOptions OptionSetType Swift 2. .

, :

base64EncodedStringWithOptions([]) // no options
base64EncodedStringWithOptions([.Encoding64CharacterLineLength])
base64EncodedStringWithOptions([.Encoding64CharacterLineLength, .EncodingEndLineWithCarriageReturn])

---

:

let apiLoginString = NSString(format: "%@:%@", "user", "password")
let apiLoginData = apiLoginString.dataUsingEncoding(NSUTF8StringEncoding)!
let base64ApiLoginString = apiLoginData.base64EncodedStringWithOptions([])

print(base64ApiLoginString)
// dXNlcjpwYXNzd29yZA==