com.carrotsearch.hppc

Class DoubleScatterSet

java.lang.Object

com.carrotsearch.hppc.DoubleHashSet

com.carrotsearch.hppc.DoubleScatterSet

All Implemented Interfaces:

DoubleCollection, DoubleContainer, DoubleLookupContainer, DoubleSet, Preallocable, java.lang.Cloneable, java.lang.Iterable<DoubleCursor>

@Generated(date="2017-10-22T12:31:11+0200",
           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:

DoubleHashSet, HPPC interfaces diagram

Nested Class Summary

Nested classes/interfaces inherited from class com.carrotsearch.hppc.DoubleHashSet

DoubleHashSet.EntryIterator

Field Summary

Fields inherited from class com.carrotsearch.hppc.DoubleHashSet

assigned, hasEmptyKey, keyMixer, keys, loadFactor, mask, orderMixer, resizeAt

Constructor Summary

Constructors

Constructor and 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.

Method Summary

Methods

Modifier and Type	Method and Description
static DoubleScatterSet	from(double... elements) Create a set from a variable number of arguments or an array of double.
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 to DoubleCollection.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, forEach, hashCode, indexExists, indexGet, indexInsert, indexOf, indexReplace, isEmpty, iterator, rehash, release, remove, removeAll, removeAll, shiftConflictingKeys, size, toArray, verifyLoadFactor, visualizeKeyDistribution

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

Constructor Detail

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.

Method Detail

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 with DoubleHashSet.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 class DoubleHashSet

from

public static DoubleScatterSet from(double... elements)

Create a set from a variable number of arguments or an array of double. The elements are copied from the argument to the internal buffer.

removeAll

public int removeAll(DoubleLookupContainer c)

Default implementation uses a predicate for removal.

Specified by:

removeAll in interface DoubleCollection

Returns:

Returns the number of removed elements.

retainAll

public int retainAll(DoubleLookupContainer c)

Default implementation uses a predicate for retaining.

Specified by:

retainAll in interface DoubleCollection

Returns:

Returns the number of removed elements.

retainAll

public int retainAll(DoublePredicate predicate)

Default implementation redirects to DoubleCollection.removeAll(DoublePredicate) and negates the predicate.

Specified by:

retainAll in interface DoubleCollection

Returns:

Returns the number of removed elements.

toString

public java.lang.String toString()

Convert the contents of this container to a human-friendly string.

Overrides:

toString in class java.lang.Object