<span class="type-var">'a</span> option</span></code></dt><dd><p>Give the last element of the list. Return <code>None</code> if the list is empty.</p></dd></dl><section><header><h2 id="iterators"><a href="#iterators" class="anchor"></a>Iterators</h2></header><dl><dt class="spec value" id="val-fold_left_same"><a href="#val-fold_left_same" class="anchor"></a><code><span class="keyword">val</span> fold_left_same : <span>(<span class="type-var">'a</span> <span>&#45;&gt;</span> <span class="type-var">'a</span> <