org.apache.mahout.common
Class Pair<A,B>

java.lang.Object
  extended by org.apache.mahout.common.Pair<A,B>
All Implemented Interfaces:
Serializable, Comparable<Pair<A,B>>

public final class Pair<A,B>
extends Object
implements Comparable<Pair<A,B>>, Serializable

A simple (ordered) pair of two objects. Elements may be null.

See Also:
Serialized Form

Constructor Summary
Pair(A first, B second)
           
 
Method Summary
 int compareTo(Pair<A,B> other)
          Defines an ordering on pairs that sorts by first value's natural ordering, ascending, and then by second value's natural ordering.
 boolean equals(Object obj)
           
 A getFirst()
           
 B getSecond()
           
 int hashCode()
           
static
<A,B> Pair<A,B>
of(A a, B b)
           
 Pair<B,A> swap()
           
 String toString()
           
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
 

Constructor Detail

Pair

public Pair(A first,
            B second)
Method Detail

getFirst

public A getFirst()

getSecond

public B getSecond()

swap

public Pair<B,A> swap()

of

public static <A,B> Pair<A,B> of(A a,
                                 B b)

equals

public boolean equals(Object obj)
Overrides:
equals in class Object

hashCode

public int hashCode()
Overrides:
hashCode in class Object

toString

public String toString()
Overrides:
toString in class Object

compareTo

public int compareTo(Pair<A,B> other)
Defines an ordering on pairs that sorts by first value's natural ordering, ascending, and then by second value's natural ordering.

Specified by:
compareTo in interface Comparable<Pair<A,B>>
Throws:
ClassCastException - if types are not actually Comparable


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