Value of type '[Users]' has no member 'username' - swift

Question

I'm trying to create a simple user login ViewController that connects to a database full of user information for my app but I get the error stated in the title.
import UIKit
import Alamofire
class Users: Decodable {
let username: String
let email: String
let password: String
init(username: String, email: String, password: String) {
self.username = username
self.email = email
self.password = password
}
class LoginVC: UIViewController {
var loggingin = [Users]()
#IBOutlet weak var usernameTxtField: UITextField!
#IBOutlet weak var passwordTxtField: UITextField!
#IBOutlet weak var checkCredsBtn: UIButton!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
let jsonURL = "http://host-2:8888/getLogin.php"
let url = URL(string: jsonURL)
URLSession.shared.dataTask(with: url!) { (data, response, error) in
do {
self.loggingin = try JSONDecoder().decode([Users].self, from: data!)
for eachUser in self.loggingin {
print(eachUser.username + " : " + eachUser.password)
}
}
catch {
print("Error")
}
}.resume()
}
#IBAction func checkCreds(_ sender: Any) {
if usernameTxtField == loggingin.username && passwordTxtField == loggingin.password {
print("YES")
}
}
}
}

Answer 1

The reason of this compile time error appears in checkCreds function, you are trying to access the username and password properties directly from the array which is obviously incorrect. What you should do instead is to get the desired object from loggingin array and do comparing with its properties:
#IBAction func checkCreds(_ sender: Any) {
let currentUser = loggingin[0]
if usernameTxtField == currentUser.username && passwordTxtField == currentUser.password {
print("YES")
}
}
In the above example, I just got the first object; I would assume that you already able to get the desired object currentUser (what's the used index) for getting the object from the loggingin.