package agents.anac.y2011.IAMhaggler2011;
import java.io.Serializable;
public class Pair implements Serializable {
private static final long serialVersionUID = -3160841691791187933L;
public final A fst;
public final B snd;
/**
* @param fst
* First value.
* @param snd
* Second value.
*/
public Pair(A fst, B snd) {
this.fst = fst;
this.snd = snd;
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#toString()
*/
public String toString() {
return "Pair[" + fst + "," + snd + "]";
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#equals(java.lang.Object)
*/
public boolean equals(Object other) {
return other instanceof Pair, ?> && equals(fst, ((Pair, ?>) other).fst) && equals(snd, ((Pair, ?>) other).snd);
}
private static boolean equals(Object x, Object y) {
return (x == null && y == null) || (x != null && x.equals(y));
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#hashCode()
*/
public int hashCode() {
if (fst == null)
return (snd == null) ? 0 : snd.hashCode() + 1;
else if (snd == null)
return fst.hashCode() + 2;
else
return fst.hashCode() * 17 + snd.hashCode();
}
public static Pair of(A a, B b) {
return new Pair(a, b);
}
}