title: How to check for an empty struct?
body: <p>I define a struct ...</p>
  
  <pre><code>type Session struct {
      playerId string
      beehive string
      timestamp time.Time
  }
  </code></pre>
  
  <p>Sometimes I assign an empty session to it (because nil is not possible)</p>
  
  <pre><code>session = Session{};
  </code></pre>
  
  <p>Then I want to check, if it is empty:</p>
  
  <pre><code>if session == Session{} {
       // do stuff...
  }
  </code></pre>
  
  <p>Obviously this is not working. How do I write it?</p>