/span> : <code class="type">'a -&gt; 'a list -&gt; 'a list</code></pre>
<pre><span id="VALsplit_last"><span class="keyword">val</span> split_last</span> : <code class="type">'a list -&gt; 'a list * 'a</code></pre>
<pre><span id="VALmay"><span class="keyword">val</span> may</span> : <code class="type">('a -&gt; unit) -&gt; 'a option -&gt; unit</code></pre>
<pre><span id="VALmay_map"><span class="keyword">val</span> may_map</span> : <code class="type">('a -&gt; 'b) -&gt; 'a option -&gt; 'b option</code></pre>