LoginViewController for http://stackoverflow.com/questions/37179575/use-of-unresolved-identifier-self

LoginViewController.swift

import Cocoa
import AppKit

let CURRENT_USER: User? = User()

class User {
  let authData: String? = ""
}

class LoginViewController: NSViewController {

  @IBOutlet weak var logoutButton: NSButton!
  @IBOutlet weak var emailTextField: NSTextField!
  @IBOutlet weak var passwordTextField: NSSecureTextField!
  
  override func viewDidLoad() {
    super.viewDidLoad()

    // Do any additional setup after loading the view.
  }

  override func viewDidAppear() {
    super.viewDidAppear()

    if NSUserDefaults.standardUserDefaults().valueForKey("uid") != nil && CURRENT_USER!.authData != nil
    {
      self.logoutButton.hidden = false
    }
  }

  func loginAction(sender: AnyObject)
  {
    let email = self.emailTextField.stringValue
    let password = self.passwordTextField.stringValue
  }
}