> length : <span><span class="type-var">'a</span> <a href="index.html#type-t">t</a></span> <span>&#45;&gt;</span> int</code></dt><dd><p><code>length t</code> is the number of elements in <code>t</code></p></dd></dl><dl><dt class="spec value" id="val-any"><a href="#val-any" class="anchor"></a><code><span class="keyword">val</span> any : <span>f:<span>(<span class="type-var">'a</span> <span>&#45;&gt;</span> bool)</span></span> <span>&#45;&gt;</span> <span><span class="type-var">'a</span> <a href="index.html#t