in),</td>
  <td>optional</td>
  
  <td></td><td>::</td>
  <td><strong>step</strong></td><td><p>Step size</p></td>
  
</tr>

</tbody>
</table>

      
    
    

    </li>
  
  
  
  </ul>
</div>

    
	   
<div class="panel panel-default">
  <div class="panel-heading codesum"><span class="anchor" id="interface-diff"></span><h3>public interface <a href='../interface/diff.html'>diff</a>
    
  </h3></div>
  
  <div class="panel-body">
    
    <p>Compute the difference along an array</p>
  </div>
  
  <ul cla