title: Is it a good idea to write the whole code in the ViewController?
body: <p>I've developed an App with Swift. Now I want to know if it's a good idea to write whole code in the ViewController or is it better to create more classes?<br>
  So can you recommend writing everything in the ViewController from your own experience?<br>
  The App I created is a camera and I think that it's inconvinient to have more classes, isn't it?</p>