res by throwing
              an expectation exception. Use the <a class="link" href="../operator/expect.html" title="Expectation Operator (a &gt; b)">Expectation
              operator</a> if you do not need an exception to be thrown when the
              first parser of a sequence fails.
            </p></td></tr>
</table></div>
<h6>
<a name="spirit.qi.reference.directive.expect.h1"></a>
            <span class="phrase"><a name="spirit.qi.reference.directive.expect.header"></a></span><a class="link" href