Copyright © 2002-2013 Akinori MUSHA <knu@iDaemons.org>
Documentation by Akinori MUSHA and Gavin Sinclair.
All rights reserved. You can redistribute and/or modify it under the same terms as Ruby.
$Id: set.rb 43808 2013-11-22 23:50:06Z tmm1 $
This library provides the Set class, which deals with a collection of unordered values with no duplicates. It is a hybrid of Array’s intuitive inter-operation facilities and Hash’s fast lookup. If you need to keep values sorted in some order, use the SortedSet class.
to_set is added to Enumerable for convenience.
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