org.apache.jena.atlas.lib.persistent

Interface PersistentSet<E>

Type Parameters:

E - the type of element in this set

All Known Implementing Classes:

PSet

public interface PersistentSet<E>

A persistent set data structure.

Method Summary

Modifier and Type	Method and Description
Set<E>	asSet() An immutable view of this as a java.util.Set.
boolean	contains(E e)
static <T> PersistentSet<T>	empty()
PersistentSet<E>	minus(E e)
PersistentSet<E>	plus(E e)
Stream<E>	stream()

Method Detail

empty

static <T> PersistentSet<T> empty()

Returns:

an empty set

plus

PersistentSet<E> plus(E e)

Parameters:

e - an element

Returns:

a new set with the elements of this set and e

minus

PersistentSet<E> minus(E e)

Parameters:

e - an element

Returns:

a new set with the elements of this set except e

contains

boolean contains(E e)

Parameters:

e - an element

Returns:

whether this set contains e

stream

Stream<E> stream()

Returns:

a Stream of the elements in this set

asSet

Set<E> asSet()

An immutable view of this as a java.util.Set.