Class ObjectSets

java.lang.Object
it.unimi.dsi.fastutil.objects.ObjectSets

public final class ObjectSets
extends Object
A class providing static methods and objects that do useful things with type-specific sets.
See Also:
Collections
  • Field Details

  • Method Details

    • emptySet

      public static <K> ObjectSet<K> emptySet()
      Returns an empty set (immutable). It is serializable and cloneable.

      This method provides a typesafe access to EMPTY_SET.

      Returns:
      an empty set (immutable).
    • singleton

      public static <K> ObjectSet<K> singleton​(K element)
      Returns a type-specific immutable set containing only the specified element. The returned set is serializable and cloneable.
      Parameters:
      element - the only element of the returned set.
      Returns:
      a type-specific immutable set containing just element.
    • synchronize

      public static <K> ObjectSet<K> synchronize​(ObjectSet<K> s)
      Returns a synchronized type-specific set backed by the given type-specific set.
      Parameters:
      s - the set to be wrapped in a synchronized set.
      Returns:
      a synchronized view of the specified set.
      See Also:
      Collections.synchronizedSet(Set)
    • synchronize

      public static <K> ObjectSet<K> synchronize​(ObjectSet<K> s, Object sync)
      Returns a synchronized type-specific set backed by the given type-specific set, using an assigned object to synchronize.
      Parameters:
      s - the set to be wrapped in a synchronized set.
      sync - an object that will be used to synchronize the access to the set.
      Returns:
      a synchronized view of the specified set.
      See Also:
      Collections.synchronizedSet(Set)
    • unmodifiable

      public static <K> ObjectSet<K> unmodifiable​(ObjectSet<K> s)
      Returns an unmodifiable type-specific set backed by the given type-specific set.
      Parameters:
      s - the set to be wrapped in an unmodifiable set.
      Returns:
      an unmodifiable view of the specified set.
      See Also:
      Collections.unmodifiableSet(Set)