pan class="keyword">const</span><span class="special">;</span>
</pre>
<p>
        <span class="bold"><strong>Effects</strong></span>: Returns the number of <a class="link" href="sub_match.html" title="sub_match"><code class="computeroutput"><span class="identifier">sub_match</span></code></a> elements stored in *this;
        that is the number of marked sub-expressions in the regular expression that
        was matched plus one.
      </p>
<a name="boost_regex.match_results.max_size"></a><pre class="progra