fold_left f accu l</code>,
   where <code class="code">l</code> is the list of <code class="code">q</code>'s elements. The queue remains
   unchanged.<br>
</div>

<pre><span id="VALtransfer"><span class="keyword">val</span> transfer</span> : <code class="type">'a <a href="Queue.html#TYPEt">t</a> -> 'a <a href="Queue.html#TYPEt">t</a> -> unit</code></pre><div class="info ">
<code class="code">transfer q1 q2</code> adds all of <code class="code">q1</code>'s elements at the end of
   the queue <code class="cod