Class DoubleFloatScatterMap

java.lang.Object
com.carrotsearch.hppc.DoubleFloatHashMap
com.carrotsearch.hppc.DoubleFloatScatterMap
All Implemented Interfaces:
DoubleFloatAssociativeContainer, DoubleFloatMap, Preallocable, Cloneable, Iterable<DoubleFloatCursor>

@Generated(date="2024-05-16T08:18:11+0000", value="KTypeVTypeScatterMap.java") public class DoubleFloatScatterMap extends DoubleFloatHashMap
Same as DoubleFloatHashMap 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.

  • Constructor Details

    • DoubleFloatScatterMap

      public DoubleFloatScatterMap()
      New instance with sane defaults.
    • DoubleFloatScatterMap

      public DoubleFloatScatterMap(int expectedElements)
      New instance with sane defaults.
    • DoubleFloatScatterMap

      public DoubleFloatScatterMap(int expectedElements, double loadFactor)
      New instance with sane defaults.
  • Method Details

    • hashKey

      protected int hashKey(double key)
      Description copied from class: DoubleFloatHashMap
      Returns a hash code for the given key.

      The default implementation mixes the hash of the key with DoubleFloatHashMap.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 DoubleFloatHashMap
    • from

      public static DoubleFloatScatterMap from(double[] keys, float[] values)
      Creates a hash map from two index-aligned arrays of key-value pairs.