title: Can't check if int is null
body: <p>I'm trying to use a dictionary. Whenever I want to check if an element is present in the dictionary, I do this:</p>
  
  <pre><code>int value = results.get("aKeyThatMayOrMayNotBePresent");
  
  if (value != null)
    // ...
  </code></pre>
  
  <p>But then the compiler says I can't compare an <code>int</code> to a <code>&lt;nulltype&gt;</code>. What's the correct way to check for <code>null</code> in this case?</p>