a href="index.html#type-t">t</a></span> <span>&#45;&gt;</span> <span>next:<a href="index.html#type-t">t</a></span> <span>&#45;&gt;</span> <span>num_iters:int</span> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a></code></dt><dt class="spec value" id="val-bottom"><a href="#val-bottom" class="anchor"></a><code><span class="keyword">val</span> bottom : <a href="index.html#type-t">t</a></code></dt><dt class="spec value" id="val-is_bottom"><a href="#val-is_bottom" class="anchor"></a><code><span class="k