= <a href="#type-uniq">uniq</a>(Elem)</tt></li><li><tt>Iterator1 = <a href="#type-iterator">iterator</a>(Elem)</tt></li><li><tt>Iterator2 = <a href="#type-iterator">iterator</a>(Elem)</tt></li><li><tt>Elem = any()</tt></li></ul></p>
<p> </p>
</div><p><p>  
Returns an iterator containing the elements of Iterator1 without the  
elements for which Fun returned duplicate values (preserving the  
order of the elements). The first occurrence of each element is  
kept.</p>
 
  May require arbitrarily large quantit