Package com.carrotsearch.hppc
Class CharByteScatterMap
java.lang.Object
com.carrotsearch.hppc.CharByteHashMap
com.carrotsearch.hppc.CharByteScatterMap
- All Implemented Interfaces:
CharByteAssociativeContainer
,CharByteMap
,Preallocable
,Cloneable
,Iterable<CharByteCursor>
@Generated(date="2024-02-21T00:00:00+0000",
value="KTypeVTypeScatterMap.java")
public class CharByteScatterMap
extends CharByteHashMap
Same as
CharByteHashMap
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.CharByteHashMap
CharByteHashMap.KeysContainer
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Field Summary
Fields inherited from class com.carrotsearch.hppc.CharByteHashMap
assigned, hasEmptyKey, keyMixer, keys, loadFactor, mask, orderMixer, resizeAt, values
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Constructor Summary
ConstructorsConstructorDescriptionNew instance with sane defaults.CharByteScatterMap
(int expectedElements) New instance with sane defaults.CharByteScatterMap
(int expectedElements, double loadFactor) New instance with sane defaults. -
Method Summary
Modifier and TypeMethodDescriptionstatic CharByteScatterMap
from
(char[] keys, byte[] values) Creates a hash map from two index-aligned arrays of key-value pairs.protected int
hashKey
(char key) Returns a hash code for the given key.Methods inherited from class com.carrotsearch.hppc.CharByteHashMap
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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CharByteScatterMap
public CharByteScatterMap()New instance with sane defaults. -
CharByteScatterMap
public CharByteScatterMap(int expectedElements) New instance with sane defaults. -
CharByteScatterMap
public CharByteScatterMap(int expectedElements, double loadFactor) New instance with sane defaults.
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Method Details
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hashKey
protected int hashKey(char key) Description copied from class:CharByteHashMap
Returns a hash code for the given key.The default implementation mixes the hash of the key with
CharByteHashMap.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 classCharByteHashMap
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from
Creates a hash map from two index-aligned arrays of key-value pairs.
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