title: Add border to all labels in a view
body: <p>In my app I have a custom view <code>containerView</code> in this view there are more than 20 labels and I want to apply a border style to all of them.</p>
  
  <p>Is there a way to avoid to add the border to each of them avoiding to have a long list?</p>
  
  <p>Something similar to:</p>
  
  <pre><code>for each label in containerView {
  
     labels.layer.borderColor = UIColor.greenColor.CGColor
  
  }
  </code></pre>