title: AngularJS ng-class expression throwing error
body: <p>I can't make this work, any idea what I'm missing?</p>
  
  <pre><code>&lt;li ng-repeat="person in persons" ng-class="selected:currentPersonID===person.id"&gt;
  </code></pre>
  
  <p>Displaying <code>currentPersonID</code> and <code>person.id</code> shows the appropriate data, but I get an Angular parse error with that expression.</p>