52 lines
1.4 KiB
Java
52 lines
1.4 KiB
Java
/**
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* Copyright (C) 2014 Open WhisperSystems
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.whispersystems.libaxolotl.util;
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public class Pair<T1, T2> {
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private final T1 v1;
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private final T2 v2;
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public Pair(T1 v1, T2 v2) {
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this.v1 = v1;
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this.v2 = v2;
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}
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public T1 first(){
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return v1;
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}
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public T2 second(){
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return v2;
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}
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public boolean equals(Object o) {
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return o instanceof Pair &&
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equal(((Pair) o).first(), first()) &&
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equal(((Pair) o).second(), second());
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}
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public int hashCode() {
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return first().hashCode() ^ second().hashCode();
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}
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private boolean equal(Object first, Object second) {
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if (first == null && second == null) return true;
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if (first == null || second == null) return false;
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return first.equals(second);
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}
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}
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