y const &amp;
                    </p>
                  </td>
<td>
                    <p>
                      Any type fulfilling a Difference Strategy Concept
                    </p>
                  </td>
<td>
                    <p>
                      strategy
                    </p>
                  </td>
<td>
                    <p>
                      The strategy which will be used for difference calculations
                    </p>
                  </td>
</tr>
</tbody>
</table></div>
