lass="keyword">typename</span> StreamT<span class="special">,</span> <span class="keyword">typename</span> T<span class="special">&gt;</span> 
    <span class="keyword">void</span> <a class="link" href="to_log_fun.html#idm35524-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">StreamT</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">T</span> <span clas