   <span class="identifier">by_default</span><span class="special">()</span> <span class="special">{</span> <span class="special">(*</span><span class="keyword">this</span><span class="special">)(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">uppercase</span><span class="special">)(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">hex</span><span class="special">);</span> <span class="special">}</span>
<span c