title: What does it mean to have an 'empty' case statement in Scala?
body: <p>How does the compiler interpret this?:</p>
  
  <pre><code>foo match {
    case bar: Bar =&gt; println("First case statement")
    case _ =&gt; 
  }
  </code></pre>
  
  <p>The second case is left empty, with nothing to return.</p>