n</span> : <code class="type">'a list list -&gt; 'a list</code></pre><div class="info ">
<div class="info-desc">
<p>An alias for <code class="code">concat</code>.</p>
</div>
</div>
<h2 id="1_Iterators">Iterators</h2>
<pre><span id="VALiter"><span class="keyword">val</span> iter</span> : <code class="type">('a -&gt; unit) -&gt; 'a list -&gt; unit</code></pre><div class="info ">
<div class="info-desc">
<p><code class="code"><span class="constructor">List</span>.iter&nbsp;f&nbsp;[a1;&nbsp;...;&nbsp;an]</code> 