in first-out queues.
<p>

   This module implements queues (FIFOs), with in-place modification.
<p>

   <b>Warning</b> This module is not thread-safe: each <a href="Queue.html#TYPEt"><code class="code">Queue.t</code></a> value
   must be protected from concurrent access (e.g. with a <code class="code">Mutex.t</code>).
   Failure to do so can lead to a crash.<br>
</div>
<hr width="100%">

<pre><span id="TYPEt"><span class="keyword">type</span> <code class="type">'a</code> t</span> </pre>
<div class="info ">
