="keyword">class</span> <span class="identifier">T</span><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">N</span> <span class="special">=</span> <span class="number">0</span><span class="special">&gt;</span>
<span class="keyword">struct</span> <a class="link" href="../../reference/extent.html" title="extent">extent</a><span class="special">;</span>

<span class="keyword">template</span> <span cla