com.carrotsearch.hppc

Class ByteFloatScatterMap

java.lang.Object

com.carrotsearch.hppc.ByteFloatHashMap

com.carrotsearch.hppc.ByteFloatScatterMap

All Implemented Interfaces:

ByteFloatAssociativeContainer, ByteFloatMap, Preallocable, java.lang.Cloneable, java.lang.Iterable<ByteFloatCursor>

@Generated(date="2015-05-07T09:33:04+0200",
           value="KTypeVTypeScatterMap.java")
public class ByteFloatScatterMap
extends ByteFloatHashMap

Same as ByteFloatHashMap 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.ByteFloatHashMap

ByteFloatHashMap.KeysContainer

Field Summary

Fields inherited from class com.carrotsearch.hppc.ByteFloatHashMap

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

Constructor Summary

Constructors

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

Method Summary

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

Methods inherited from class com.carrotsearch.hppc.ByteFloatHashMap

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

ByteFloatScatterMap

public ByteFloatScatterMap()

New instance with sane defaults.

ByteFloatScatterMap

public ByteFloatScatterMap(int expectedElements)

New instance with sane defaults.

ByteFloatScatterMap

public ByteFloatScatterMap(int expectedElements,
                           double loadFactor)

New instance with sane defaults.

Method Detail

hashKey

protected int hashKey(byte key)

Description copied from class: ByteFloatHashMap

Returns a hash code for the given key.

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

from

public static ByteFloatScatterMap from(byte[] keys,
                                       float[] values)

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