Package com.carrotsearch.hppc
Class DoubleByteScatterMap
java.lang.Object
com.carrotsearch.hppc.DoubleByteHashMap
com.carrotsearch.hppc.DoubleByteScatterMap
- All Implemented Interfaces:
DoubleByteAssociativeContainer
,DoubleByteMap
,Preallocable
,Cloneable
,Iterable<DoubleByteCursor>
@Generated(date="2023-10-26T04:33:09+0000",
value="KTypeVTypeScatterMap.java")
public class DoubleByteScatterMap
extends DoubleByteHashMap
Same as
DoubleByteHashMap
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.
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Nested Class Summary
Nested classes/interfaces inherited from class com.carrotsearch.hppc.DoubleByteHashMap
DoubleByteHashMap.KeysContainer
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Field Summary
Fields inherited from class com.carrotsearch.hppc.DoubleByteHashMap
assigned, hasEmptyKey, keyMixer, keys, loadFactor, mask, orderMixer, resizeAt, values
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Constructor Summary
ConstructorsConstructorDescriptionNew instance with sane defaults.DoubleByteScatterMap
(int expectedElements) New instance with sane defaults.DoubleByteScatterMap
(int expectedElements, double loadFactor) New instance with sane defaults. -
Method Summary
Modifier and TypeMethodDescriptionstatic DoubleByteScatterMap
from
(double[] keys, byte[] 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.DoubleByteHashMap
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
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Constructor Details
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DoubleByteScatterMap
public DoubleByteScatterMap()New instance with sane defaults. -
DoubleByteScatterMap
public DoubleByteScatterMap(int expectedElements) New instance with sane defaults. -
DoubleByteScatterMap
public DoubleByteScatterMap(int expectedElements, double loadFactor) New instance with sane defaults.
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Method Details
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hashKey
protected int hashKey(double key) Description copied from class:DoubleByteHashMap
Returns a hash code for the given key.The default implementation mixes the hash of the key with
DoubleByteHashMap.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 classDoubleByteHashMap
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from
Creates a hash map from two index-aligned arrays of key-value pairs.
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