Class ByteByteScatterMap

java.lang.Object
com.carrotsearch.hppc.ByteByteHashMap
com.carrotsearch.hppc.ByteByteScatterMap
All Implemented Interfaces:
ByteByteAssociativeContainer, ByteByteMap, Preallocable, Cloneable, Iterable<ByteByteCursor>

@Generated(date="2024-02-21T10:44:44+0000", value="KTypeVTypeScatterMap.java") public class ByteByteScatterMap extends ByteByteHashMap
Same as ByteByteHashMap 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

    • ByteByteScatterMap

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

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

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

    • hashKey

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

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

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