title: Refresh FirstView from SecondView in Tab Bar Controller
body: <p>My app is using <code>Tab Bar Controller</code> which contains several <code>View Controller</code> in different tab. When user open the app, they will firstly enter FirstView. I would like to put some method in SecondView which refresh the FirstView. This is my <code>FirstViewController.swift</code>:</p>
  
  <pre><code>class FirstViewController: UIViewController, UIScrollViewDelegate {
  
      override func viewDidLoad() {
  
          super.viewDidLoad()
  </code></pre>
  
  <p>I have tried to put </p>
  
  <pre><code>FirstViewController().viewDidLoad()
  </code></pre>
  
  <p>in my <code>SecondViewController.swift</code>, but this is not working. Is there any better way to refresh the FirstView?</p>