onst : <span><a href="Constant/index.html#type-t">Constant.t</a> <span class="arrow">&#45;&gt;</span></span> <a href="#type-pattern">pattern</a></span></code></div></div><div class="odoc-spec"><div class="spec value" id="val-mk_pat_tuple" class="anchored"><a href="#val-mk_pat_tuple" class="anchor"></a><code><span><span class="keyword">val</span> mk_pat_tuple : <span><span><a href="#type-pattern">pattern</a> <span class="xref-unresolved">Base</span>.list</span> <span class="arrow">&#45;&gt;</span></span> <a 