title: Dependent observable to concatenate array items
body: <p><a href="http://jsfiddle.net/bWJTY/29/" rel="nofollow">http://jsfiddle.net/bWJTY/29/</a></p>
  
  <p>Can anybody tell me where my dependent observable is going wrong?</p>
  
  <pre><code>self.FirstTwo = ko.computed(function() {
      return self.FiveFave.FaveItems[0].Name + " " + self.FiveFave.FaveItems[1].Name;    
  }, self);
  </code></pre>
  
  <p>I just want to concatenate the first two items of an array.</p>