com.google.gwt.dev.util.collect

Class IdentityHashSet<E>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractSet<E>

com.google.gwt.dev.util.collect.HashSet<E>

com.google.gwt.dev.util.collect.IdentityHashSet<E>

Type Parameters:

E - the element type

All Implemented Interfaces:

Serializable, Iterable<E>, Collection<E>, Set<E>

public class IdentityHashSet<E>
extends HashSet<E>

A memory-efficient identity hash set.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
IdentityHashSet()
IdentityHashSet(Collection<? extends E> c)

Method Summary

Modifier and Type	Method and Description
protected boolean	itemEquals(Object a, Object b) Returns whether two items are equal for the purposes of this set.
protected int	itemHashCode(Object o) Return the hashCode for an item.

Methods inherited from class com.google.gwt.dev.util.collect.HashSet

add, addAll, clear, contains, doReadObject, doWriteObject, iterator, remove, size, toArray, toArray

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

containsAll, isEmpty, retainAll, toString

Methods inherited from class java.lang.Object

finalize, getClass

Methods inherited from interface java.util.Set

containsAll, isEmpty, retainAll

Constructor Detail

IdentityHashSet

public IdentityHashSet()

IdentityHashSet

public IdentityHashSet(Collection<? extends E> c)

Method Detail

itemEquals

protected boolean itemEquals(Object a,
                             Object b)

Description copied from class: HashSet

Returns whether two items are equal for the purposes of this set.

Overrides:

itemEquals in class HashSet<E>

itemHashCode

protected int itemHashCode(Object o)

Description copied from class: HashSet

Return the hashCode for an item.

Overrides:

itemHashCode in class HashSet<E>