title: Check if value in array in angular template?
body: <p>Is there any way to check if a value is in an array in an angular template? I'm looking to something like this:</p>
  
  <pre><code>&lt;div ng-class="{'myClass':1 in [1,2,5]}"&gt;Yay&lt;/div&gt;
  </code></pre>
  
  <p>Where myClass is applied if 1 is in the array.</p>
  
  <p>Is this possible?</p>
  
  <p>And as an aside, what templating engine exactly is used with Angularjs? Where can I find documentation for it? Whenever I try and search (even official docs), I only seem to turn up docs on directives or data binding.</p>