d><code>E</code></td>
<td>The type of the vector expression.</td>
<td>&nbsp;</td>
</tr>
<tr>
<td><code>F</code></td>
<td>The type of the operation.</td>
<td>&nbsp;</td>
</tr>
</tbody>
</table>
<h4>Model of</h4>
<p><a href="expression_concept.htm#vector_expression">Vector Expression</a>
.</p>
<h4>Type requirements</h4>
<p>None, except for those imposed by the requirements of <a href=
"expression_concept.htm#vector_expression">Vector Expression</a> .</p>
<h4>Public base classes</h4>
<p><code>vector_expression