ntwolists">Iterators on two lists</h2>
<pre><span id="VALiter2"><span class="keyword">val</span> iter2</span> : <code class="type">('a -&gt; 'b -&gt; unit) -&gt; 'a list -&gt; 'b list -&gt; unit</code></pre><div class="info ">
<div class="info-desc">
<p><code class="code"><span class="constructor">List</span>.iter2&nbsp;f&nbsp;[a1;&nbsp;...;&nbsp;an]&nbsp;[b1;&nbsp;...;&nbsp;bn]</code> calls in turn
   <code class="code">f&nbsp;a1&nbsp;b1;&nbsp;...;&nbsp;f&nbsp;an&nbsp;bn</code>.
   Raise <code class="code"