title: angularjs calling Filter twice with ng-repeat
body: <p>I am new to <code>angularjs</code> and trying to learn concept of filters.But in my case <code>angularjs</code> is calling the filter twice.I was expecting filter to run only once but its running twice. Cant understand why this is happening..</p>
  
  <p>here is my <strong><a href="http://plnkr.co/edit/Y3r0YOPFaQM4G5PhzMDj" rel="noreferrer">plunker</a></strong>...</p>