e="usort-1">usort/1</a></h3>
<div class="spec">
<p><tt>usort(Iterator1) -&gt; Iterator2</tt>
<ul class="definitions"><li><tt>Iterator1 = <a href="#type-iterator">iterator</a>(Elem)</tt></li><li><tt>Iterator2 = <a href="#type-iterator">iterator</a>(Elem)</tt></li></ul></p>
<p> </p>
</div><p><p>
  Returns a iterator containing the sorted elements of <code>Iterator1</code>  
where all except the first element of the elements comparing equal  
have been deleted.</p>
 
  The iterator will be fully evaluated, inf