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