com.carrotsearch.hppc

Class FloatDoubleScatterMap

java.lang.Object

com.carrotsearch.hppc.FloatDoubleHashMap

com.carrotsearch.hppc.FloatDoubleScatterMap

All Implemented Interfaces:

FloatDoubleAssociativeContainer, FloatDoubleMap, Preallocable, java.lang.Cloneable, java.lang.Iterable<FloatDoubleCursor>

@Generated(date="2023-04-24T17:14:49+0800",
           value="KTypeVTypeScatterMap.java")
public class FloatDoubleScatterMap
extends FloatDoubleHashMap

Same as FloatDoubleHashMap 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.

Nested Class Summary

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

FloatDoubleHashMap.KeysContainer

Field Summary

Fields inherited from class com.carrotsearch.hppc.FloatDoubleHashMap

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

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
static FloatDoubleScatterMap	from(float[] keys, double[] values) Creates a hash map from two index-aligned arrays of key-value pairs.
protected int	hashKey(float key) Returns a hash code for the given key.

Methods inherited from class com.carrotsearch.hppc.FloatDoubleHashMap

addTo, allocateBuffers, allocateThenInsertThenRehash, clear, clone, containsKey, ensureCapacity, equalElements, equals, forEach, forEach, get, getOrDefault, hashCode, indexExists, indexGet, indexInsert, indexOf, indexReplace, isEmpty, iterator, keys, put, putAll, putAll, putIfAbsent, putOrAdd, rehash, release, remove, removeAll, removeAll, removeAll, shiftConflictingKeys, size, toString, values, verifyLoadFactor, visualizeKeyDistribution

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

FloatDoubleScatterMap

public FloatDoubleScatterMap()

New instance with sane defaults.

FloatDoubleScatterMap

public FloatDoubleScatterMap(int expectedElements)

New instance with sane defaults.

FloatDoubleScatterMap

public FloatDoubleScatterMap(int expectedElements,
                             double loadFactor)

New instance with sane defaults.

Method Detail

hashKey

protected int hashKey(float key)

Description copied from class: FloatDoubleHashMap

Returns a hash code for the given key.

The default implementation mixes the hash of the key with FloatDoubleHashMap.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 FloatDoubleHashMap

from

public static FloatDoubleScatterMap from(float[] keys,
                                         double[] values)

Creates a hash map from two index-aligned arrays of key-value pairs.