com.carrotsearch.hppc

Class LongScatterSet

java.lang.Object

com.carrotsearch.hppc.AbstractLongCollection

com.carrotsearch.hppc.LongHashSet

com.carrotsearch.hppc.LongScatterSet

All Implemented Interfaces:

LongCollection, LongContainer, LongLookupContainer, LongSet, Preallocable, java.lang.Cloneable, java.lang.Iterable<LongCursor>

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

Same as LongHashSet 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:

LongHashSet, HPPC interfaces diagram

Nested Class Summary

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

LongHashSet.EntryIterator

Field Summary

Fields inherited from class com.carrotsearch.hppc.LongHashSet

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

Constructor Summary

Constructors

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

Method Summary

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

Methods inherited from class com.carrotsearch.hppc.LongHashSet

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.AbstractLongCollection

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.LongCollection

removeAll, retainAll, retainAll

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

LongScatterSet

public LongScatterSet()

New instance with sane defaults.

LongScatterSet

public LongScatterSet(int expectedElements)

New instance with sane defaults.

LongScatterSet

public LongScatterSet(int expectedElements,
                      double loadFactor)

New instance with sane defaults.

Method Detail

hashKey

protected int hashKey(long key)

Description copied from class: LongHashSet

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

from

public static LongScatterSet from(long... elements)

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