it.unimi.dsi.fastutil.ints

Class IntSets.EmptySet

java.lang.Object

java.util.AbstractCollection<Integer>

it.unimi.dsi.fastutil.ints.AbstractIntCollection

it.unimi.dsi.fastutil.ints.IntCollections.EmptyCollection

it.unimi.dsi.fastutil.ints.IntSets.EmptySet

All Implemented Interfaces:

IntCollection, IntIterable, IntSet, Serializable, Cloneable, Iterable<Integer>, Collection<Integer>, Set<Integer>

Direct Known Subclasses:

IntSortedSets.EmptySet

Enclosing class:

IntSets

public static class IntSets.EmptySet
extends IntCollections.EmptyCollection
implements IntSet, Serializable, Cloneable

An immutable class representing the empty set and implementing a type-specific set interface.

This class may be useful to implement your own in case you subclass a type-specific set.

See Also:

Serialized Form

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	EmptySet()

Method Summary

Modifier and Type	Method and Description
Object	clone()
boolean	equals(Object o)
boolean	rem(int k) Deprecated.
boolean	remove(int ok) Removes an element from this set.

Methods inherited from class it.unimi.dsi.fastutil.ints.IntCollections.EmptyCollection

addAll, addAll, clear, contains, hashCode, iterator, removeAll, removeAll, retainAll, retainAll, size, toArray

Methods inherited from class it.unimi.dsi.fastutil.ints.AbstractIntCollection

add, add, contains, containsAll, remove, toArray, toIntArray, toIntArray, toString

Methods inherited from class java.util.AbstractCollection

containsAll, isEmpty, toArray

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.ints.IntSet

add, contains, iterator, remove

Methods inherited from interface it.unimi.dsi.fastutil.ints.IntCollection

add, addAll, contains, containsAll, removeAll, removeIf, removeIf, retainAll, toArray, toIntArray, toIntArray

Methods inherited from interface it.unimi.dsi.fastutil.ints.IntIterable

forEach, forEach

Methods inherited from interface java.util.Set

addAll, clear, containsAll, hashCode, isEmpty, removeAll, retainAll, size, spliterator, toArray, toArray

Methods inherited from interface java.util.Collection

parallelStream, stream

Constructor Detail

EmptySet

protected EmptySet()

Method Detail

remove

public boolean remove(int ok)

Description copied from interface: IntSet

Removes an element from this set.

Note that the corresponding method of a type-specific collection is rem(). This unfortunate situation is caused by the clash with the similarly named index-based method in the List interface.

Specified by:

remove in interface IntSet

See Also:

Collection.remove(Object)

clone

public Object clone()

Overrides:

clone in class Object

equals

public boolean equals(Object o)

Specified by:

equals in interface Collection<Integer>

Specified by:

equals in interface Set<Integer>

Overrides:

equals in class IntCollections.EmptyCollection

rem

@Deprecated
public boolean rem(int k)

Deprecated.

Description copied from class: AbstractIntCollection

Removes a single instance of the specified element from this collection, if it is present (optional operation).

Note that this method should be called remove(), but the clash with the similarly named index-based method in the List interface forces us to use a distinguished name. For simplicity, the set interfaces reinstates remove().

This implementation iterates over the elements in the collection, looking for the specified element and tries to remove it.

Specified by:

rem in interface IntCollection

Specified by:

rem in interface IntSet

Overrides:

rem in class AbstractIntCollection

See Also:

Collection.remove(Object)