Copyright © 2005, 2009 Jan Molic, Thomas Sawyer
Ruby License
This module is free software. You may use, modify, and/or redistribute this software under the same terms as Ruby.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Andrew Johnson (merge, to_a, inspect, shift and Hash[])
Jeff Sharpe (reverse and reverse!)
Thomas Leitner (has_key? and key?)
Ported from OrderHash 2.0, Copyright © 2005 Jan Molic