Package com.carrotsearch.hppc
Class CharDoubleScatterMap
- java.lang.Object
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- com.carrotsearch.hppc.CharDoubleHashMap
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- com.carrotsearch.hppc.CharDoubleScatterMap
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- All Implemented Interfaces:
CharDoubleAssociativeContainer
,CharDoubleMap
,Preallocable
,java.lang.Cloneable
,java.lang.Iterable<CharDoubleCursor>
@Generated(date="2021-05-28T03:45:42+0000", value="KTypeVTypeScatterMap.java") public class CharDoubleScatterMap extends CharDoubleHashMap
Same asCharDoubleHashMap
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.CharDoubleHashMap
CharDoubleHashMap.KeysContainer
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Field Summary
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Fields inherited from class com.carrotsearch.hppc.CharDoubleHashMap
assigned, hasEmptyKey, keyMixer, keys, loadFactor, mask, orderMixer, resizeAt, values
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Constructor Summary
Constructors Constructor Description CharDoubleScatterMap()
New instance with sane defaults.CharDoubleScatterMap(int expectedElements)
New instance with sane defaults.CharDoubleScatterMap(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 CharDoubleScatterMap
from(char[] keys, double[] 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.CharDoubleHashMap
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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CharDoubleScatterMap
public CharDoubleScatterMap()
New instance with sane defaults.
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CharDoubleScatterMap
public CharDoubleScatterMap(int expectedElements)
New instance with sane defaults.
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CharDoubleScatterMap
public CharDoubleScatterMap(int expectedElements, double loadFactor)
New instance with sane defaults.
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Method Detail
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hashKey
protected int hashKey(char key)
Description copied from class:CharDoubleHashMap
Returns a hash code for the given key.The default implementation mixes the hash of the key with
CharDoubleHashMap.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 classCharDoubleHashMap
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from
public static CharDoubleScatterMap from(char[] keys, double[] values)
Creates a hash map from two index-aligned arrays of key-value pairs.
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