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