diff options
author | Moxie Marlinspike <moxie@thoughtcrime.org> | 2014-11-24 12:54:30 -0800 |
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committer | Moxie Marlinspike <moxie@thoughtcrime.org> | 2014-11-24 12:54:30 -0800 |
commit | 60800e155612bea797eed93c67046a23d26054cc (patch) | |
tree | d88368c1c26162e27e790195133ca2b526597afe /src/main/java/org/whispersystems/libaxolotl/util/Pair.java |
Break out into separate repo.
Diffstat (limited to 'src/main/java/org/whispersystems/libaxolotl/util/Pair.java')
-rw-r--r-- | src/main/java/org/whispersystems/libaxolotl/util/Pair.java | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/main/java/org/whispersystems/libaxolotl/util/Pair.java b/src/main/java/org/whispersystems/libaxolotl/util/Pair.java new file mode 100644 index 00000000..0476d932 --- /dev/null +++ b/src/main/java/org/whispersystems/libaxolotl/util/Pair.java @@ -0,0 +1,51 @@ +/** + * Copyright (C) 2014 Open WhisperSystems + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ +package org.whispersystems.libaxolotl.util; + +public class Pair<T1, T2> { + private final T1 v1; + private final T2 v2; + + public Pair(T1 v1, T2 v2) { + this.v1 = v1; + this.v2 = v2; + } + + public T1 first(){ + return v1; + } + + public T2 second(){ + return v2; + } + + public boolean equals(Object o) { + return o instanceof Pair && + equal(((Pair) o).first(), first()) && + equal(((Pair) o).second(), second()); + } + + public int hashCode() { + return first().hashCode() ^ second().hashCode(); + } + + private boolean equal(Object first, Object second) { + if (first == null && second == null) return true; + if (first == null || second == null) return false; + return first.equals(second); + } +} |