com.carrotsearch.hppc

Class FloatCharScatterMap

java.lang.Object

com.carrotsearch.hppc.FloatCharHashMap

com.carrotsearch.hppc.FloatCharScatterMap

All Implemented Interfaces:

FloatCharAssociativeContainer, FloatCharMap, Preallocable, java.lang.Cloneable, java.lang.Iterable<FloatCharCursor>

@Generated(date="2017-10-22T12:31:12+0200",
           value="KTypeVTypeScatterMap.java")
public class FloatCharScatterMap
extends FloatCharHashMap

Same as FloatCharHashMap 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.FloatCharHashMap

FloatCharHashMap.KeysContainer

Field Summary

Fields inherited from class com.carrotsearch.hppc.FloatCharHashMap

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

Constructor Summary

Constructors

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

Method Summary

Methods

Modifier and Type	Method and Description
static FloatCharScatterMap	from(float[] keys, char[] 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.FloatCharHashMap

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

Constructor Detail

FloatCharScatterMap

public FloatCharScatterMap()

New instance with sane defaults.

FloatCharScatterMap

public FloatCharScatterMap(int expectedElements)

New instance with sane defaults.

FloatCharScatterMap

public FloatCharScatterMap(int expectedElements,
                   double loadFactor)

New instance with sane defaults.

Method Detail

hashKey

protected int hashKey(float key)

Description copied from class: FloatCharHashMap

Returns a hash code for the given key.

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

from

public static FloatCharScatterMap from(float[] keys,
                       char[] values)

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