1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.functor;
18
19 /**
20 * Functor marker interface. All provided functor interfaces extend this interface.
21 * <p>
22 * While not strictly required,
23 * it is <em>encouraged</em> that functor implementations:
24 * <ul>
25 * <li>Implement {@link java.io.Serializable Serializable}</li>
26 * <li>Override {@link java.lang.Object#equals(java.lang.Object)}</li>
27 * <li>Override {@link java.lang.Object#hashCode()}</li>
28 * <li>Override {@link java.lang.Object#toString()}</li>
29 * </ul>
30 * </p>
31 *
32 * @since 1.0
33 * @version $Revision: 1349928 $ $Date: 2012-06-13 12:53:27 -0300 (Wed, 13 Jun 2012) $
34 */
35 public interface Functor {
36 }