pe-lazy_list">lazy_list</a>(Elem)</tt></li></ul></p>
<p> </p>
</div><p><p>
  Demand an element from <code>Iterator</code>. Will return either an improper  
list containing the next element and an iterator as a continuation,  
or an empty list if iteration is complete.</p>
 
  <p>Examples:</p>
 
  <pre>  &gt; llists:next(llists:seq(1, 5)).
  [1|{iterator,#Fun&lt;llists.1.134155648&gt;}]
  &gt; llists:next(llists:from_list([])).
  []</pre></p>

<h3 class="function"><a name="nth-2">nth/2</a></h3>
<div class="s