com.carrotsearch.hppc

Class ByteScatterSet

java.lang.Object

com.carrotsearch.hppc.AbstractByteCollection

com.carrotsearch.hppc.ByteHashSet

com.carrotsearch.hppc.ByteScatterSet

All Implemented Interfaces:

ByteCollection, ByteContainer, ByteLookupContainer, ByteSet, Preallocable, java.lang.Cloneable, java.lang.Iterable<ByteCursor>

@Generated(date="2023-04-24T17:14:46+0800",
           value="KTypeScatterSet.java")
public class ByteScatterSet
extends ByteHashSet

Same as ByteHashSet 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:

ByteHashSet, HPPC interfaces diagram

Nested Class Summary

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

ByteHashSet.EntryIterator

Field Summary

Fields inherited from class com.carrotsearch.hppc.ByteHashSet

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

Constructor Summary

Constructors

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

Method Summary

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

Methods inherited from class com.carrotsearch.hppc.ByteHashSet

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.AbstractByteCollection

removeAll, retainAll, retainAll, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.carrotsearch.hppc.ByteCollection

removeAll, retainAll, retainAll

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

ByteScatterSet

public ByteScatterSet()

New instance with sane defaults.

ByteScatterSet

public ByteScatterSet(int expectedElements)

New instance with sane defaults.

ByteScatterSet

public ByteScatterSet(int expectedElements,
                      double loadFactor)

New instance with sane defaults.

Method Detail

hashKey

protected int hashKey(byte key)

Description copied from class: ByteHashSet

Returns a hash code for the given key. The default implementation mixes the hash of the key with ByteHashSet.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 ByteHashSet

from

public static ByteScatterSet from(byte... elements)

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