title: DataTables - get values of a single column from all selected rows
body: <p>I want to retrieve the values from the first column of my DataTable, of all selected rows. So, the dev of DataTables suggests the following:</p>
  
  <pre><code>function getValues() {
      let rows = table.rows( { selected: true } );
      return table.cells( rows, 0 ).data();
  }
  </code></pre>
  
  <p>That works fine if a single row is selected. However, if multiple rows are selected, the returned object is just empty.</p>
  
  <p>Any ideas on how to solve that?</p>