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comparison org.eclipse.core.databinding/src/org/eclipse/core/internal/databinding/Pair.d @ 78:0a55d2d5a946

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Added file for databinding
author Frank Benoit <benoit@tionex.de>
date Tue, 14 Apr 2009 11:35:29 +0200
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76:f05e6e8b2f2d 78:0a55d2d5a946
1 /*******************************************************************************
2 * Copyright (c) 2005, 2008 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 *******************************************************************************/
11 module org.eclipse.core.internal.databinding.Pair;
12
13 import java.lang.all;
14
15 /**
16 * Class Pair. Represents a mathematical pair of objects (a, b).
17 * @since 1.0
18 */
19 public class Pair {
20
21 /**
22 * a in the pair (a, b)
23 */
24 public final Object a;
25
26 /**
27 * b in the pair (a, b)
28 */
29 public final Object b;
30
31 /**
32 * Construct a Pair(a, b)
33 *
34 * @param a a in the pair (a, b)
35 * @param b b in the pair (a, b)
36 */
37 public this(Object a, Object b) {
38 this.a = a;
39 this.b = b;
40 }
41
42 public int hashCode() {
43 final int prime = 31;
44 int result = 1;
45 result = prime * result + ((a is null) ? 0 : a.hashCode());
46 result = prime * result + ((b is null) ? 0 : b.hashCode());
47 return result;
48 }
49
50 public override bool opEquals(Object obj) {
51 if (this is obj)
52 return true;
53 if (obj is null)
54 return false;
55 if (getClass() !is obj.getClass())
56 return false;
57 Pair other = cast(Pair) obj;
58 if (a is null) {
59 if (other.a !is null)
60 return false;
61 } else if (!a.equals(other.a))
62 return false;
63 if (b is null) {
64 if (other.b !is null)
65 return false;
66 } else if (!b.equals(other.b))
67 return false;
68 return true;
69 }
70
71 }