title: How to save ViewController server data when coming back to it from another VC?
body: <p>I have this line of events: the user goes into HomeViewController, taps on something, goes into another view controller and when he taps on the back bar button, he goes back to HomeViewController, of course.</p>
  
  <p>Only that in this case I do not want to make again the request to the server, I just want to show it as it previously was. How can I do this?</p>
  
  <p>I mention that I do my requests to server in viewWillAppear.</p>