Package org.apache.wayang.core.util

Class Counter<T>

java.lang.Object

org.apache.wayang.core.util.Counter<T>

All Implemented Interfaces:

Iterable<Map.Entry<T,Integer>>

public class Counter<T>
extends Object
implements Iterable<Map.Entry<T,Integer>>

This utility helps to count elements.

Constructor Summary

Constructors

Constructor	Description
Counter()

Method Summary

Modifier and Type	Method	Description
int	add(T element, int delta)	Counts the given delta for the given element.
void	addAll(Counter<T> that)
void	clear()
int	decrement(T element)
boolean	equals(Object o)
int	get(T element)
int	hashCode()
int	increment(T element)
boolean	isEmpty()
Iterator<Map.Entry<T,Integer>>	iterator()
void	remove(T element)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Details

Counter

public Counter()

Method Details

get

public int get(T element)

add

public int add(T element,
 int delta)

Counts the given delta for the given element.

Returns:

the new count

increment

public int increment(T element)

decrement

public int decrement(T element)

addAll

public void addAll(Counter<T> that)

isEmpty

public boolean isEmpty()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

iterator

public Iterator<Map.Entry<T,Integer>> iterator()

Specified by:

iterator in interface Iterable<T>

remove

public void remove(T element)

clear

public void clear()