deleteCookie in swift

var cookieJar:[NSHTTPCookie] = NSHTTPCookieStorage.sharedHTTPCookieStorage().cookies as! [NSHTTPCookie]

        
if cookieJar.isEmpty == false {




    println("\n\n\nnot null\n\n\n")

    for cookie in cookieJar {

        NSHTTPCookieStorage.sharedHTTPCookieStorage().deleteCookie(cookie as NSHTTPCookie)

    }

}