com.carrotsearch.hppc

Class ObjectScatterSet<KType>

java.lang.Object

com.carrotsearch.hppc.AbstractObjectCollection<KType>

com.carrotsearch.hppc.ObjectHashSet<KType>

com.carrotsearch.hppc.ObjectScatterSet<KType>

All Implemented Interfaces:

ObjectCollection<KType>, ObjectContainer<KType>, ObjectLookupContainer<KType>, ObjectSet<KType>, Preallocable, java.lang.Cloneable, java.lang.Iterable<ObjectCursor<KType>>

@Generated(date="2023-04-24T17:14:46+0800",
           value="KTypeScatterSet.java")
public class ObjectScatterSet<KType>
extends ObjectHashSet<KType>

Same as ObjectHashSet but does not implement per-instance key mixing strategy and uses a simpler (faster) bit distribution function.

Note: read about important differences between hash and scatter sets.

See Also:

ObjectHashSet, HPPC interfaces diagram

Nested Class Summary

Nested classes/interfaces inherited from class com.carrotsearch.hppc.ObjectHashSet

ObjectHashSet.EntryIterator

Field Summary

Fields inherited from class com.carrotsearch.hppc.ObjectHashSet

assigned, hasEmptyKey, keyMixer, keys, loadFactor, mask, orderMixer, resizeAt

Constructor Summary

Constructors

Constructor and Description
ObjectScatterSet() New instance with sane defaults.
ObjectScatterSet(int expectedElements) New instance with sane defaults.
ObjectScatterSet(int expectedElements, double loadFactor) New instance with sane defaults.

Method Summary

Modifier and Type	Method and Description
static <KType> ObjectScatterSet<KType>	from(KType... elements) Create a set from a variable number of arguments or an array of Object.
protected int	hashKey(KType key) Returns a hash code for the given key.

Methods inherited from class com.carrotsearch.hppc.ObjectHashSet

add, addAll, addAll, addAll, allocateBuffers, allocateThenInsertThenRehash, clear, clone, contains, ensureCapacity, equals, forEach, forEach, hashCode, indexExists, indexGet, indexInsert, indexOf, indexReplace, isEmpty, iterator, rehash, release, remove, removeAll, removeAll, shiftConflictingKeys, size, toArray, verifyLoadFactor, visualizeKeyDistribution

Methods inherited from class com.carrotsearch.hppc.AbstractObjectCollection

equals, removeAll, retainAll, retainAll, toArray, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.carrotsearch.hppc.ObjectCollection

removeAll, retainAll, retainAll

Methods inherited from interface com.carrotsearch.hppc.ObjectContainer

toArray

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

ObjectScatterSet

public ObjectScatterSet()

New instance with sane defaults.

ObjectScatterSet

public ObjectScatterSet(int expectedElements)

New instance with sane defaults.

ObjectScatterSet

public ObjectScatterSet(int expectedElements,
                        double loadFactor)

New instance with sane defaults.

Method Detail

hashKey

protected int hashKey(KType key)

Description copied from class: ObjectHashSet

Returns a hash code for the given key. The default implementation mixes the hash of the key with ObjectHashSet.keyMixer to differentiate hash order of keys between hash containers. Helps alleviate problems resulting from linear conflict resolution in open addressing. The output from this function should evenly distribute keys across the entire integer range.

Overrides:

hashKey in class ObjectHashSet<KType>

from

@SafeVarargs
public static <KType> ObjectScatterSet<KType> from(KType... elements)

Create a set from a variable number of arguments or an array of Object. The elements are copied from the argument to the internal buffer.