01 /*
02 * Java Genetic Algorithm Library (jenetics-1.6.0).
03 * Copyright (c) 2007-2014 Franz Wilhelmstötter
04 *
05 * Licensed under the Apache License, Version 2.0 (the "License");
06 * you may not use this file except in compliance with the License.
07 * You may obtain a copy of the License at
08 *
09 * 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 * Author:
18 * Franz Wilhelmstötter (franz.wilhelmstoetter@gmx.at)
19 */
20 package org.jenetics.util;
21
22 import static org.jenetics.internal.util.object.eq;
23
24 import org.jenetics.internal.util.HashBuilder;
25
26
27 /**
28 * @author <a href="mailto:franz.wilhelmstoetter@gmx.at">Franz Wilhelmstötter</a>
29 * @since 1.0
30 * @version 1.0 — <em>$Date: 2014-03-01 $</em>
31 */
32 class Tuple2<T1, T2> {
33
34 final T1 _1;
35 final T2 _2;
36
37 public Tuple2(final T1 t1, final T2 t2) {
38 _1 = t1;
39 _2 = t2;
40 }
41
42 @Override
43 public int hashCode() {
44 return HashBuilder.of(getClass()).and(_1).and(_2).value();
45 }
46
47 @Override
48 public boolean equals(final Object obj) {
49 if (obj == this) {
50 return true;
51 }
52 if (obj == null || obj.getClass() != getClass()) {
53 return false;
54 }
55
56 final Tuple2<?, ?> tuple = (Tuple2<?, ?>)obj;
57 return eq(_1, tuple._1) && eq(_2, tuple._2);
58 }
59
60 @Override
61 public String toString() {
62 return "(" + _1 + ", " + _2 + ")";
63 }
64
65 }
|