></a><code><span class="keyword">val</span> validate : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a></code></dt><dt class="spec value" id="val-check_bot"><a href="#val-check_bot" class="anchor"></a><code><span class="keyword">val</span> check_bot : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><a href="index.html#type-t">t</a> option</span></code></dt><dt class="spec value" id="val-of_bound"><a href="#val-of_bound" class="anchor"></a><code><span 