n class="special">&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">::</span><span class="identifier">const_iterator</span><span class="special">&gt;</span>
      <span class="identifier">i</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">make_u32regex_token_iterator</span><span class="special">(</span><span class="identifier">text</span><span