it.unimi.dsi.fastutil.longs

Class LongSets.EmptySet

java.lang.Object

java.util.AbstractCollection<Long>

it.unimi.dsi.fastutil.longs.AbstractLongCollection

it.unimi.dsi.fastutil.longs.LongCollections.EmptyCollection

it.unimi.dsi.fastutil.longs.LongSets.EmptySet

All Implemented Interfaces:

LongCollection, LongIterable, LongSet, Serializable, Cloneable, Iterable<Long>, Collection<Long>, Set<Long>

Direct Known Subclasses:

LongSortedSets.EmptySet

Enclosing class:

LongSets

public static class LongSets.EmptySet
extends LongCollections.EmptyCollection
implements LongSet, 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

Method Summary

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

Methods inherited from class it.unimi.dsi.fastutil.longs.LongCollections.EmptyCollection

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

Methods inherited from class it.unimi.dsi.fastutil.longs.AbstractLongCollection

add, add, contains, containsAll, remove, toArray, toLongArray, toLongArray, toString

Methods inherited from class java.util.AbstractCollection

containsAll, isEmpty, toArray

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.longs.LongSet

add, contains, iterator, remove

Methods inherited from interface it.unimi.dsi.fastutil.longs.LongCollection

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

Methods inherited from interface it.unimi.dsi.fastutil.longs.LongIterable

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

Method Detail

remove

public boolean remove(long ok)

Description copied from interface: LongSet

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 LongSet

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<Long>

Specified by:

equals in interface Set<Long>

Overrides:

equals in class LongCollections.EmptyCollection

rem

@Deprecated
public boolean rem(long k)

Deprecated.

Description copied from class: AbstractLongCollection

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 LongCollection

Specified by:

rem in interface LongSet

Overrides:

rem in class AbstractLongCollection

See Also:

Collection.remove(Object)