01 /* This file is part of the project "Hilbert II" - http://www.qedeq.org
02 *
03 * Copyright 2000-2011, Michael Meyling <mime@qedeq.org>.
04 *
05 * "Hilbert II" is free software; you can redistribute
06 * it and/or modify it under the terms of the GNU General Public
07 * License as published by the Free Software Foundation; either
08 * version 2 of the License, or (at your option) any later version.
09 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 */
15
16 package org.qedeq.kernel.se.base.module;
17
18 import org.qedeq.kernel.se.base.list.Element;
19
20
21 /**
22 * List of variables.
23 *
24 * @version $Revision: 1.8 $
25 * @author Michael Meyling
26 */
27 public interface VariableList {
28
29 /**
30 * Get size of list.
31 *
32 * @return List size.
33 */
34 public int size();
35
36 /**
37 * Get <code>index</code>-th element of list.
38 *
39 * @param index Index.
40 * @return Index-th element.
41 */
42 public Element get(int index);
43 }
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