Package com.carrotsearch.hppc

Class DoubleFloatScatterMap

java.lang.Object

com.carrotsearch.hppc.DoubleFloatHashMap

com.carrotsearch.hppc.DoubleFloatScatterMap

All Implemented Interfaces:

DoubleFloatAssociativeContainer, DoubleFloatMap, Preallocable, Cloneable, Iterable<DoubleFloatCursor>

@Generated(date="2024-05-16T08:18:11+0000",
           value="KTypeVTypeScatterMap.java")
public class DoubleFloatScatterMap
extends DoubleFloatHashMap

Same as DoubleFloatHashMap 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.DoubleFloatHashMap

DoubleFloatHashMap.KeysContainer

Field Summary

Fields inherited from class com.carrotsearch.hppc.DoubleFloatHashMap

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

Constructor Summary

Constructors

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

Method Summary

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

Methods inherited from class com.carrotsearch.hppc.DoubleFloatHashMap

addTo, allocateBuffers, allocateThenInsertThenRehash, clear, clone, containsKey, ensureCapacity, equalElements, equals, 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 Details

DoubleFloatScatterMap

public DoubleFloatScatterMap()

New instance with sane defaults.

DoubleFloatScatterMap

public DoubleFloatScatterMap(int expectedElements)

New instance with sane defaults.

DoubleFloatScatterMap

public DoubleFloatScatterMap(int expectedElements,
 double loadFactor)

New instance with sane defaults.

Method Details

hashKey

protected int hashKey(double key)

Description copied from class: DoubleFloatHashMap

Returns a hash code for the given key.

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

from

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

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