 * bool</span></code></div><div class="spec-doc"><p>Joins two abstract elements. The boolean flag indicates if the join was exact. It is always sound to return false</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-join_list"><a href="#val-join_list" class="anchor"></a><code><span><span class="keyword">val</span> join_list : <span><span><a href="#type-t">t</a> list</span> <span class="arrow">&#45;&gt;</span></span> <a href="#type-t">t</a> * bool</span></code></div><div class="s