Package com.carrotsearch.hppc
Class ByteCharScatterMap
- java.lang.Object
-
- com.carrotsearch.hppc.ByteCharHashMap
-
- com.carrotsearch.hppc.ByteCharScatterMap
-
- All Implemented Interfaces:
ByteCharAssociativeContainer
,ByteCharMap
,Preallocable
,java.lang.Cloneable
,java.lang.Iterable<ByteCharCursor>
@Generated(date="2024-05-16T12:00:00+0000", value="KTypeVTypeScatterMap.java") public class ByteCharScatterMap extends ByteCharHashMap
Same asByteCharHashMap
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.ByteCharHashMap
ByteCharHashMap.KeysContainer
-
-
Field Summary
-
Fields inherited from class com.carrotsearch.hppc.ByteCharHashMap
assigned, hasEmptyKey, keyMixer, keys, loadFactor, mask, orderMixer, resizeAt, values
-
-
Constructor Summary
Constructors Constructor Description ByteCharScatterMap()
New instance with sane defaults.ByteCharScatterMap(int expectedElements)
New instance with sane defaults.ByteCharScatterMap(int expectedElements, double loadFactor)
New instance with sane defaults.
-
Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description static ByteCharScatterMap
from(byte[] keys, char[] 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.ByteCharHashMap
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
-
-
-
-
Constructor Detail
-
ByteCharScatterMap
public ByteCharScatterMap()
New instance with sane defaults.
-
ByteCharScatterMap
public ByteCharScatterMap(int expectedElements)
New instance with sane defaults.
-
ByteCharScatterMap
public ByteCharScatterMap(int expectedElements, double loadFactor)
New instance with sane defaults.
-
-
Method Detail
-
hashKey
protected int hashKey(byte key)
Description copied from class:ByteCharHashMap
Returns a hash code for the given key.The default implementation mixes the hash of the key with
ByteCharHashMap.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 classByteCharHashMap
-
from
public static ByteCharScatterMap from(byte[] keys, char[] values)
Creates a hash map from two index-aligned arrays of key-value pairs.
-
-