de.caff.generics

Interface CountingSet<T>

Type Parameters:

T - set type

All Superinterfaces:

java.util.Collection<T>, java.lang.Iterable<T>, java.util.Set<T>

All Known Implementing Classes:

AbstractBasicCountingSet, CountingHashSet, CountingTreeSet

public interface CountingSet<T>
extends java.util.Set<T>

A set which counts the number of additions.

Because it would be breaking the set semantics removal is not allowed. All removal methods but AbstractBasicCountingSet.clear() therefore will throw an UnsupportedOperationException.

Author:

Rammi

Method Summary

Modifier and Type	Method and Description
int	getCount(T item) Get the count how often any item was added.

Methods inherited from interface java.util.Set

add, addAll, clear, contains, containsAll, equals, hashCode, isEmpty, iterator, remove, removeAll, retainAll, size, spliterator, toArray, toArray

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Method Detail

getCount

int getCount(T item)

Get the count how often any item was added.

Parameters:

item - item to look for

Returns:

add count or 0 if the item was never added (or the clear code has been used after its addition)