Package com.carrotsearch.hppc
Class DoubleLongScatterMap
java.lang.Object
com.carrotsearch.hppc.DoubleLongHashMap
com.carrotsearch.hppc.DoubleLongScatterMap
- All Implemented Interfaces:
DoubleLongAssociativeContainer
,DoubleLongMap
,Preallocable
,Cloneable
,Iterable<DoubleLongCursor>
@Generated(date="2023-10-26T04:33:09+0000",
value="KTypeVTypeScatterMap.java")
public class DoubleLongScatterMap
extends DoubleLongHashMap
Same as
DoubleLongHashMap
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.DoubleLongHashMap
DoubleLongHashMap.KeysContainer
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Field Summary
Fields inherited from class com.carrotsearch.hppc.DoubleLongHashMap
assigned, hasEmptyKey, keyMixer, keys, loadFactor, mask, orderMixer, resizeAt, values
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Constructor Summary
ConstructorsConstructorDescriptionNew instance with sane defaults.DoubleLongScatterMap
(int expectedElements) New instance with sane defaults.DoubleLongScatterMap
(int expectedElements, double loadFactor) New instance with sane defaults. -
Method Summary
Modifier and TypeMethodDescriptionstatic DoubleLongScatterMap
from
(double[] keys, long[] values) Creates a hash map from two index-aligned arrays of key-value pairs.protected int
hashKey
(double key) Returns a hash code for the given key.Methods inherited from class com.carrotsearch.hppc.DoubleLongHashMap
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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DoubleLongScatterMap
public DoubleLongScatterMap()New instance with sane defaults. -
DoubleLongScatterMap
public DoubleLongScatterMap(int expectedElements) New instance with sane defaults. -
DoubleLongScatterMap
public DoubleLongScatterMap(int expectedElements, double loadFactor) New instance with sane defaults.
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Method Details
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hashKey
protected int hashKey(double key) Description copied from class:DoubleLongHashMap
Returns a hash code for the given key.The default implementation mixes the hash of the key with
DoubleLongHashMap.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 classDoubleLongHashMap
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from
Creates a hash map from two index-aligned arrays of key-value pairs.
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