Package com.carrotsearch.hppc
Class ByteByteScatterMap
java.lang.Object
com.carrotsearch.hppc.ByteByteHashMap
com.carrotsearch.hppc.ByteByteScatterMap
- All Implemented Interfaces:
ByteByteAssociativeContainer
,ByteByteMap
,Preallocable
,Cloneable
,Iterable<ByteByteCursor>
@Generated(date="2024-02-21T10:44:44+0000",
value="KTypeVTypeScatterMap.java")
public class ByteByteScatterMap
extends ByteByteHashMap
Same as
ByteByteHashMap
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.ByteByteHashMap
ByteByteHashMap.KeysContainer
-
Field Summary
Fields inherited from class com.carrotsearch.hppc.ByteByteHashMap
assigned, hasEmptyKey, keyMixer, keys, loadFactor, mask, orderMixer, resizeAt, values
-
Constructor Summary
ConstructorsConstructorDescriptionNew instance with sane defaults.ByteByteScatterMap
(int expectedElements) New instance with sane defaults.ByteByteScatterMap
(int expectedElements, double loadFactor) New instance with sane defaults. -
Method Summary
Modifier and TypeMethodDescriptionstatic ByteByteScatterMap
from
(byte[] keys, byte[] 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.ByteByteHashMap
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
-
ByteByteScatterMap
public ByteByteScatterMap()New instance with sane defaults. -
ByteByteScatterMap
public ByteByteScatterMap(int expectedElements) New instance with sane defaults. -
ByteByteScatterMap
public ByteByteScatterMap(int expectedElements, double loadFactor) New instance with sane defaults.
-
-
Method Details
-
hashKey
protected int hashKey(byte key) Description copied from class:ByteByteHashMap
Returns a hash code for the given key.The default implementation mixes the hash of the key with
ByteByteHashMap.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 classByteByteHashMap
-
from
Creates a hash map from two index-aligned arrays of key-value pairs.
-