ord">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="identifier">Arg1</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">Arg2</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">Arg3</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">