eyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
<span class="identifier">static_string</span><span class="special">&amp;</span>
<span class="identifier">insert</span><span class="special">(</span>
    <span class="identifier">size_type</span> <span class="identifier">index</span><span class="special">,</span>
    <span class="identifier">T</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">t</span><span class="special"