s="spec">
<p><tt>length(Iterator) -&gt; Length</tt>
<ul class="definitions"><li><tt>Iterator = <a href="#type-iterator">iterator()</a></tt></li><li><tt>Length = non_neg_integer()</tt></li></ul></p>
<p> </p>
</div><p><p>
  Returns the length of <code>Iterator</code>, for example:</p>
 
  <pre>  &gt; llists:length(llists:seq(1, 9)).
  9</pre>
 
  The iterator will be fully evaluated, infinite iterators will never
  return.</p>

<h3 class="function"><a name="map-2">map/2</a></h3>
<div class="spec">
<p><tt>map(