e><span class="keyword">val</span> concat_no_order : <span><span><span class="type-var">'a</span> <a href="index.html#type-t">t</a></span> <a href="index.html#type-t">t</a></span> <span>&#45;&gt;</span> <span><span class="type-var">'a</span> <a href="index.html#type-t">t</a></span></code></dt><dt class="spec value" id="val-cons"><a href="#val-cons" class="anchor"></a><code><span class="keyword">val</span> cons : <span class="type-var">'a</span> <span>&#45;&gt;</span> <span><span class="type-var">'a</span> <