title: Programmatically go back to previous ViewController in Swift
body: <p>I send the user over to a page on a button click. This page is a <strong>UITableViewController</strong>. </p>
  
  <p>Now if the user taps on a cell, I would like to push him back to the previous page.</p>
  
  <p>I thought about something like <code>self.performSegue("back")....</code> but this seems to be a bad idea. </p>
  
  <p>What is the correct way to do it? </p>