=keyword>bool </span><span class=identifier>at_end</span><span class=special>() 
    </span><span class=keyword>const</span></code></td>
  <td class="table_cells">Returns true if the input is exhausted</td>
  </tr>
  <td class="table_cells"><code><span class=identifier>value_t </span><span class=keyword>operator</span><span class=special>*() 
    </span><span class=keyword>const</span></code></td>
    <td class="table_cells">Dereference/get a <code><span class=identifier>value_t</span></code> 
      from th