<?php
/* Basic List Interface
* By Asher Holley (http://www.wolfoxinc.com/opensource/)
* Released under the GNU General Public License ( http://www.opensource.org/licenses/gpl-license.html )
* Copyright © 2006 Asher Holley
*
* This contains a useful interface for list like structures like stacks,
queues, bags, sets, etc. */
interface List_Inter {
public function top();
public function &top_ref();
public function push();
public function push_ref( &$a );
public function pop();
public function &pop_ref();
public function index( $i );
public function &index_ref( $i );
public function count();
public function is_empty();
public function clear();
public function get_list();
}
?>
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