title: go back previous segue without loosing tabbar controller in swift
body: <p>I used show(e.g.push) segue in order to display tabbar controller as well,
  but i cannot achieve to go back previous event.
  This is for modal segue : </p>
  
  <pre><code>dismissViewControllerAnimated(true, completion: nil)
  </code></pre>
  
  <p>Thanks.</p>
  
  <p><img src="https://i.stack.imgur.com/aDFgS.png" alt="enter image description here"></p>
  
  <p><img src="https://i.stack.imgur.com/qWDdS.png" alt="enter image description here"></p>
  
  <p><img src="https://i.stack.imgur.com/yKvX5.png" alt="enter image description here"></p>