Pair

java.lang.Object
- libai.common.Pair<V,K>

All Implemented Interfaces:

java.lang.Comparable<Pair<V,K>>
```
public final class Pair<V extends java.lang.Comparable<V>,K>
extends java.lang.Object
implements java.lang.Comparable<Pair<V,K>>
```
Pair class allows to keep two elements of possibly different types in the same structure and can be used for keep pairs key-value.

Field Summary

Fields
Modifier and Type Field Description

V first
First element of the pair (the 'key').

K second
Second element of the pair (the 'value').

Constructor Summary

Constructors
Constructor Description

Pair(V x, K y)
Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`compareTo(Pair<V,K> o)`	Compare two pairs by the first element.
`boolean`	`equals(java.lang.Object obj)`
`int`	`hashCode()`
`java.lang.String`	`toString()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - first
```
public V extends java.lang.Comparable<V> first
```
    First element of the pair (the 'key').
  - second
```
public K second
```
    Second element of the pair (the 'value').
- Constructor Detail
  - Pair
```
public Pair(V x,
            K y)
```
    Constructor.
    
    Parameters:
    
    x - the first element for the pair.
    
    y - the second element for the pair.
- Method Detail
  - compareTo
```
public int compareTo(Pair<V,K> o)
```
    Compare two pairs by the first element. The first element type must implement the Comparable interface.
    
    Specified by:
    
    compareTo in interface java.lang.Comparable<V extends java.lang.Comparable<V>>
    
    Parameters:
    
    o - The pair to compare with.
    
    Returns:
    
    -1 if this is less than o, 0 if are equals, 1 if this is greater than o.
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class java.lang.Object
  - equals
```
public boolean equals(java.lang.Object obj)
```
    Overrides:
    
    equals in class java.lang.Object
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object