typename</span> RegexTraits <span class="special">=</span> <a class="link" href="regex_traits.html" title="Struct template regex_traits">regex_traits</a><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">iterator_value</span><span class="special">&lt;</span><span class="identifier">BidiIter</span><span class="special">&gt;</span><span class="special">::</span><span class="identifier">type</span><span class="special">&gt;</span><span class="special">,</span> 
    