Class ObjectIdentityHashSet<KType>

java.lang.Object
com.carrotsearch.hppc.AbstractObjectCollection<KType>
com.carrotsearch.hppc.ObjectHashSet<KType>
com.carrotsearch.hppc.ObjectIdentityHashSet<KType>
All Implemented Interfaces:
ObjectCollection<KType>, ObjectContainer<KType>, ObjectLookupContainer<KType>, ObjectSet<KType>, Preallocable, Cloneable, Iterable<ObjectCursor<KType>>

public class ObjectIdentityHashSet<KType> extends ObjectHashSet<KType>
A reference-equality (identity) hash set.
  • Constructor Details

    • ObjectIdentityHashSet

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

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

      public ObjectIdentityHashSet(int expectedElements, double loadFactor)
      New instance with sane defaults.
    • ObjectIdentityHashSet

      public ObjectIdentityHashSet(int expectedElements, double loadFactor, HashOrderMixingStrategy orderMixer)
      New instance with the provided defaults.
      Parameters:
      expectedElements - The expected number of elements guaranteed not to cause a rehash (inclusive).
      loadFactor - The load factor for internal buffers. Insane load factors (zero, full capacity) are rejected by ObjectHashSet.verifyLoadFactor(double).
      orderMixer - Hash key order mixing strategy. See HashOrderMixing for predefined implementations. Use constant mixers only if you understand the potential consequences.
    • ObjectIdentityHashSet

      public ObjectIdentityHashSet(ObjectContainer<? extends KType> container)
      New instance copying elements from another ObjectContainer.
  • Method Details

    • hashKey

      protected int hashKey(KType key)
      Description copied from class: ObjectHashSet
      Returns a hash code for the given key. The default implementation mixes the hash of the key with ObjectHashSet.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 ObjectHashSet<KType>
    • equals

      protected boolean equals(Object v1, Object v2)
      Overrides:
      equals in class AbstractObjectCollection<KType>
    • from

      @SafeVarargs public static <KType> ObjectIdentityHashSet<KType> from(KType... elements)
      Create a set from a variable number of arguments or an array of KType. The elements are copied from the argument to the internal buffer.