title: How to get Last Selected row and Current Selected Row from UITableview swift?
body: <p>I am trying to get the previously selected row and the currently selected row from the <code>UITableview didSelectRowAt</code> method.  </p>
  
  <p>The <code>didSelectRowAt</code> method only provides the row that was selected. </p>
  
  <p>Is there a way to know which row was selected before <code>didSelectRowAt</code> was called?</p>