
<div class="spec">
<p><tt>in(X::term(), P::integer(), Q::<a href="#type-pqueue">pqueue()</a>) -&gt; <a href="#type-pqueue">pqueue()</a></tt><br></p>
</div><p>
  <h4><a name="Append_an_item_to_the_tail_of_a_specific_priority_queue.">Append an item to the tail of a specific priority queue.</a></h4>
  O(1)</p>

<h3 class="function"><a name="is_empty-1">is_empty/1</a></h3>
<div class="spec">
<p><tt>is_empty(X1::<a href="#type-pqueue">pqueue()</a>) -&gt; true | false</tt><br></p>
</div><p>
  <h4><a name="Check_