Package com.carrotsearch.hppc
Class DoubleScatterSet
- java.lang.Object
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- com.carrotsearch.hppc.DoubleHashSet
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- com.carrotsearch.hppc.DoubleScatterSet
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- All Implemented Interfaces:
DoubleCollection
,DoubleContainer
,DoubleLookupContainer
,DoubleSet
,Preallocable
,java.lang.Cloneable
,java.lang.Iterable<DoubleCursor>
@Generated(date="2021-05-28T03:45:41+0000", value="KTypeScatterSet.java") public class DoubleScatterSet extends DoubleHashSet
Same asDoubleHashSet
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:
DoubleHashSet
, HPPC interfaces diagram
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Nested Class Summary
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Nested classes/interfaces inherited from class com.carrotsearch.hppc.DoubleHashSet
DoubleHashSet.EntryIterator
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Field Summary
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Fields inherited from class com.carrotsearch.hppc.DoubleHashSet
assigned, hasEmptyKey, keyMixer, keys, loadFactor, mask, orderMixer, resizeAt
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Constructor Summary
Constructors Constructor Description DoubleScatterSet()
New instance with sane defaults.DoubleScatterSet(int expectedElements)
New instance with sane defaults.DoubleScatterSet(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 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.int
removeAll(DoubleLookupContainer c)
Default implementation uses a predicate for removal.int
retainAll(DoubleLookupContainer c)
Default implementation uses a predicate for retaining.int
retainAll(DoublePredicate predicate)
Default implementation redirects toDoubleCollection.removeAll(DoublePredicate)
and negates the predicate.java.lang.String
toString()
Convert the contents of this container to a human-friendly string.-
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
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Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
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Methods inherited from interface com.carrotsearch.hppc.DoubleCollection
removeAll, retainAll, retainAll
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Constructor Detail
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DoubleScatterSet
public DoubleScatterSet()
New instance with sane defaults.
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DoubleScatterSet
public DoubleScatterSet(int expectedElements)
New instance with sane defaults.
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DoubleScatterSet
public DoubleScatterSet(int expectedElements, double loadFactor)
New instance with sane defaults.
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Method Detail
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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
public static DoubleScatterSet from(double... elements)
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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removeAll
public int removeAll(DoubleLookupContainer c)
Default implementation uses a predicate for removal.- Specified by:
removeAll
in interfaceDoubleCollection
- Returns:
- Returns the number of removed elements.
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retainAll
public int retainAll(DoubleLookupContainer c)
Default implementation uses a predicate for retaining.- Specified by:
retainAll
in interfaceDoubleCollection
- Returns:
- Returns the number of removed elements.
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retainAll
public int retainAll(DoublePredicate predicate)
Default implementation redirects toDoubleCollection.removeAll(DoublePredicate)
and negates the predicate.- Specified by:
retainAll
in interfaceDoubleCollection
- Returns:
- Returns the number of removed elements.
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toString
public java.lang.String toString()
Convert the contents of this container to a human-friendly string.- Overrides:
toString
in classjava.lang.Object
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