title: Does the IS operator unbox value type or not?
body: <p>I can't find an answer to the following question:</p>
  
  <pre><code>object o = 10; // Box
  int i = (int)o; // Unbox
  </code></pre>
  
  <p>it's clear, but the following isn't clear</p>
  
  <pre><code>bool isInt = o is int; // Is the unbox here or not?
  </code></pre>