title: ng-repeat filter on boolean
body: <p>I am trying to filter on a boolean value in an ng-repeat.</p>
  
  <p>List of unregistered users:</p>
  
  <pre><code>    &lt;h3&gt;Unregistered Users&lt;/h3&gt;
      &lt;div ng-repeat="user in users | filter:!user.registered"&gt;
          &lt;div class="row-fluid"&gt;
          &lt;div class="span2"&gt;
            {{user.name}}
          &lt;/div&gt;
        &lt;/div&gt;
      &lt;/div&gt;
  </code></pre>
  
  <p>List of registered users:</p>
  
  <pre><code>    &lt;h3&gt;Registered Users&lt;/h3&gt;
      &lt;div ng-repeat="user in users | filter:user.registered"&gt;
          &lt;div class="row-fluid"&gt;
          &lt;div class="span2"&gt;
            {{user.name}}
          &lt;/div&gt;
        &lt;/div&gt;
      &lt;/div&gt;
  </code></pre>
  
  <p>Is there a good way to filter based on registered and !registered.</p>