"identifier">str</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">char_type</span><span class="special">*</span> <span class="identifier">sub</span><span class="special">)</span><span class="keyword">const</span><span class="special">;</span>
<span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">Traits</span><span class="special">,</span> <span class="keyword">class</span> <span class=