title: Retain checkbox state in angular when the scope changes
body: <p>below is a code snippet:</p>
  
  <pre><code>&lt;tr ng-repeat="data in ioStatusData"&gt;
      &lt;td&gt;&lt;input type="checkbox"&gt;&lt;/td&gt;
      &lt;td&gt;{{data.IOStatusName}}&lt;/td&gt;
      &lt;td&gt;{{data.IOLabel}}&lt;/td&gt;
      &lt;td&gt;{{data.IOStatus}}&lt;/td&gt;
      &lt;td&gt;{{data.TestResult}}&lt;/td&gt;
  &lt;/tr&gt;
  </code></pre>
  
  <p><code>scope.ioStatusData</code> keeps updating every 5 secs.I want to retain checkbox state (checked or unchecked) even when <code>scope.ioStatusData</code> changes.</p>