| 1 | package uk.co.zonetora.fj.util; |
| 2 | |
| 3 | |
| 4 | public class Tuple<X,Y> { |
| 5 | |
| 6 | private final X x; |
| 7 | |
| 8 | private final Y y; |
| 9 | |
| 10 | public Tuple(X x, Y y) { |
| 11 | if(x == null || y == null) { |
| 12 | throw new IllegalArgumentException("Cannot have null elements in a tuple"); |
| 13 | } |
| 14 | this.x = x; |
| 15 | this.y = y; |
| 16 | } |
| 17 | |
| 18 | public X getX() { |
| 19 | return x; |
| 20 | } |
| 21 | |
| 22 | public Y getY() { |
| 23 | return y; |
| 24 | } |
| 25 | |
| 26 | @Override |
| 27 | public int hashCode() { |
| 28 | final int prime = 31; |
| 29 | int result = 1; |
| 30 | result = prime * result + x.hashCode(); |
| 31 | result = prime * result + y.hashCode(); |
| 32 | return result; |
| 33 | } |
| 34 | |
| 35 | @Override |
| 36 | public boolean equals(Object obj) { |
| 37 | if (this == obj) |
| 38 | return true; |
| 39 | if (obj == null) |
| 40 | return false; |
| 41 | if (!(obj instanceof Tuple)) |
| 42 | return false; |
| 43 | final Tuple<?,?> other = (Tuple) obj; |
| 44 | if (!x.equals(other.x)) |
| 45 | return false; |
| 46 | if (!y.equals(other.y)) |
| 47 | return false; |
| 48 | return true; |
| 49 | } |
| 50 | |
| 51 | } |