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