title: iOS 8 Self Sizing Cells - Allow Zero Height
body: <p>I am using the self sizing cell feature and it works well until I want to hide a cell completely. I moved away from heightForRowAtIndexPath for this and I setup the following:</p>
  
  <pre><code>override func viewDidLoad() {
      self.tableView.rowHeight = UITableViewAutomaticDimension
      self.tableView.estimatedRowHeight = 0
  }
  </code></pre>
  
  <p>However when I have no text for a tableviewcell to render I get the following message:</p>
  
  <blockquote>
    <p>Warning once only: Detected a case where constraints ambiguously
    suggest a height of zero for a tableview cell's content view. We're
    considering the collapse unintentional and using standard height
    instead.</p>
  </blockquote>
  
  <p>I really just need a way to hide / show content dynamically. I am using a static tableview for this, so maybe I am approaching this wrong?</p>