t><dd><p>Monadic let binding</p></dd></dl><dl><dt class="spec value" id="val-prod"><a href="#val-prod" class="anchor"></a><code><span class="keyword">val</span> prod : <span><span class="type-var">'a</span> <a href="index.html#type-t">t</a></span> <span>&#45;&gt;</span> <span><span class="type-var">'b</span> list</span> <span>&#45;&gt;</span> <span><span>(<span class="type-var">'a</span> * <span class="type-var">'b</span>)</span> <a href="index.html#type-t">t</a></span></code></dt><dd><p>Do the Cartesian pr