>,</span> <span class="identifier">RegexTraitsT</span> <span class="special">&gt;</span> <span class="special">&amp;</span> Rx<span class="special">,</span> 
             <span class="identifier">match_flag_type</span> Flags <span class="special">=</span> <span class="identifier">match_default</span><span class="special">)</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="idp166329856"></a><h2>Description</h2>
<p>Search for a substring matching the given regex in the input.</p