class="keyword">val</span> of_bound : <a href="argument-1-B/index.html#type-t">B.t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a></code></dt><dt class="spec value" id="val-zero"><a href="#val-zero" class="anchor"></a><code><span class="keyword">val</span> zero : <a href="index.html#type-t">t</a></code></dt><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=