<div>A couple thoughts:</div><div><br></div><div>size takes O(n).  That&#39;s just depressing.  Really.</div><div><br></div><div>Do you think union, intersection, etc. could be supported?</div><br clear="all">Louis Wasserman<br>

<a href="mailto:wasserman.louis@gmail.com">wasserman.louis@gmail.com</a><br><a href="http://profiles.google.com/wasserman.louis">http://profiles.google.com/wasserman.louis</a><br>