;&gt;</span> bool</code></dt><dt class="spec value" id="val-null"><a href="#val-null" class="anchor"></a><code><span class="keyword">val</span> null : <a href="index.html#type-t">t</a></code></dt><dd><p>null behaves like zero except for the function isnull</p></dd></dl><dl><dt class="spec value" id="val-one"><a href="#val-one" class="anchor"></a><code><span class="keyword">val</span> one : <a href="index.html#type-t">t</a></code></dt><dt class="spec value" id="val-pp"><a href="#val-pp" class="anchor"></a><c