class="special">(</span><span class="identifier">T</span><span class="special">&amp;</span> <span class="identifier">result</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">P</span><span class="special">&amp;)</span><span class="keyword">const</span>      <span class="special">---+--------</span>
                                                         <span class="identifier">s</span> <span class="special">|</span> <span class="identifier">s</span>
          