This is the first time I've felt the need to change the language. I
guess everybody else here wants other changes. I've got this class in
every project I've worked on for the last 2 years. Anybody has a
better one?
public class Par<P extends Serializable, Q extends Serializable>
implements Serializable {
static final long serialVersionUID = 9L;
private P car;
private Q cdr;
public Par(P car, Q cdr) {
this.car = car;
this.cdr = cdr;
}
public P getCar() {
return car;
}
public Q getCdr() {
return cdr;
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
@SuppressWarnings("unchecked")
final Par<P, Q> other = (Par<P, Q>) obj;
if (this.car != other.car && (this.car == null || !
this.car.equals(other.car))) {
return false;
}
if (this.cdr != other.cdr && (this.cdr == null || !
this.cdr.equals(other.cdr))) {
return false;
}
return true;
}
@Override
public int hashCode() {
int hash = 9;
hash += 97 * hash + (this.car != null ? this.car.hashCode() :
0);
hash += 97 * hash + (this.cdr != null ? this.cdr.hashCode() :
0);
return hash;
}
}
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