Package com.carrotsearch.hppc
Class DoubleScatterSet
java.lang.Object
com.carrotsearch.hppc.AbstractDoubleCollection
com.carrotsearch.hppc.DoubleHashSet
com.carrotsearch.hppc.DoubleScatterSet
- All Implemented Interfaces:
DoubleCollection
,DoubleContainer
,DoubleLookupContainer
,DoubleSet
,Preallocable
,Cloneable
,Iterable<DoubleCursor>
@Generated(date="2023-09-14T00:00:00+0000",
value="KTypeScatterSet.java")
public class DoubleScatterSet
extends DoubleHashSet
Same as
DoubleHashSet
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.
- See Also:
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Nested Class Summary
Nested classes/interfaces inherited from class com.carrotsearch.hppc.DoubleHashSet
DoubleHashSet.EntryIterator
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Field Summary
Fields inherited from class com.carrotsearch.hppc.DoubleHashSet
assigned, hasEmptyKey, keyMixer, keys, loadFactor, mask, orderMixer, resizeAt
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Constructor Summary
ConstructorsConstructorDescriptionNew instance with sane defaults.DoubleScatterSet
(int expectedElements) New instance with sane defaults.DoubleScatterSet
(int expectedElements, double loadFactor) New instance with sane defaults. -
Method Summary
Modifier and TypeMethodDescriptionstatic DoubleScatterSet
from
(double... elements) Create a set from a variable number of arguments or an array ofdouble
.protected int
hashKey
(double key) Returns a hash code for the given key.Methods inherited from class com.carrotsearch.hppc.DoubleHashSet
add, addAll, addAll, addAll, allocateBuffers, allocateThenInsertThenRehash, clear, clone, contains, ensureCapacity, equals, forEach, hashCode, indexExists, indexGet, indexInsert, indexOf, indexReplace, isEmpty, iterator, rehash, release, remove, removeAll, removeAll, shiftConflictingKeys, size, toArray, verifyLoadFactor, visualizeKeyDistribution
Methods inherited from class com.carrotsearch.hppc.AbstractDoubleCollection
removeAll, retainAll, retainAll, toString
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
Methods inherited from interface com.carrotsearch.hppc.DoubleCollection
removeAll, retainAll, retainAll
Methods inherited from interface java.lang.Iterable
forEach, spliterator
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Constructor Details
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DoubleScatterSet
public DoubleScatterSet()New instance with sane defaults. -
DoubleScatterSet
public DoubleScatterSet(int expectedElements) New instance with sane defaults. -
DoubleScatterSet
public DoubleScatterSet(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:DoubleHashSet
Returns a hash code for the given key. The default implementation mixes the hash of the key withDoubleHashSet.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 classDoubleHashSet
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from
Create a set from a variable number of arguments or an array ofdouble
. The elements are copied from the argument to the internal buffer.
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