Package it.unimi.dsi.fastutil.objects

Class ReferenceLists.Singleton<K>

java.lang.Object

java.util.AbstractCollection<K>

it.unimi.dsi.fastutil.objects.AbstractReferenceCollection<K>

it.unimi.dsi.fastutil.objects.AbstractReferenceList<K>

it.unimi.dsi.fastutil.objects.ReferenceLists.Singleton<K>

All Implemented Interfaces:

ObjectIterable<K>, ReferenceCollection<K>, ReferenceList<K>, Stack<K>, Serializable, Cloneable, Iterable<K>, Collection<K>, List<K>, RandomAccess

Enclosing class:

ReferenceLists

public static class ReferenceLists.Singleton<K>
extends AbstractReferenceList<K>
implements RandomAccess, Serializable, Cloneable

An immutable class representing a type-specific singleton list.

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

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class it.unimi.dsi.fastutil.objects.AbstractReferenceList

AbstractReferenceList.ReferenceRandomAccessSubList<K>, AbstractReferenceList.ReferenceSubList<K>

Method Summary

Modifier and Type	Method	Description
boolean	addAll(int i, Collection<? extends K> c)	Adds all of the elements in the specified collection to this list (optional operation).
boolean	addAll(Collection<? extends K> c)
void	addElements(int index, K[] a)	Add (hopefully quickly) elements to this type-specific list.
void	addElements(int index, K[] a, int offset, int length)	Add (hopefully quickly) elements to this type-specific list.
void	clear()
Object	clone()
boolean	contains(Object k)	Returns true if this list contains the specified element.
void	forEach(Consumer<? super K> action)
K	get(int i)
void	getElements(int from, Object[] a, int offset, int length)	Copies (hopefully quickly) elements of this type-specific list into the given array.
int	indexOf(Object k)
ObjectListIterator<K>	iterator()	Returns a type-specific iterator on the elements of this collection.
ObjectListIterator<K>	listIterator()	Returns a type-specific list iterator on the list.
ObjectListIterator<K>	listIterator(int i)	Returns a type-specific list iterator on the list starting at a given index.
K	remove(int i)
boolean	remove(Object k)
boolean	removeAll(Collection<?> c)
void	removeElements(int from, int to)	Removes (hopefully quickly) elements of this type-specific list.
boolean	removeIf(Predicate<? super K> filter)
void	replaceAll(UnaryOperator<K> operator)
boolean	retainAll(Collection<?> c)
void	setElements(int index, K[] a)	Set (hopefully quickly) elements to match the array given.
void	setElements(int index, K[] a, int offset, int length)	Set (hopefully quickly) elements to match the array given.
void	setElements(K[] a)	Set (hopefully quickly) elements to match the array given.
int	size()
void	size(int size)	Sets the size of this list.
void	sort(Comparator<? super K> comparator)	Sorts this list using a sort assured to be stable.
ObjectSpliterator<K>	spliterator()	Returns a type-specific spliterator on the elements of this list.
ReferenceList<K>	subList(int from, int to)	Returns a type-specific view of the portion of this list from the index from, inclusive, to the index to, exclusive.
Object[]	toArray()
void	unstableSort(Comparator<? super K> comparator)	Sorts this list using a sort not assured to be stable.

Methods inherited from class it.unimi.dsi.fastutil.objects.AbstractReferenceList

add, add, equals, hashCode, lastIndexOf, peek, pop, push, set, toArray, top, toString

Methods inherited from class java.util.AbstractCollection

containsAll, isEmpty

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

parallelStream, stream, toArray

Methods inherited from interface java.util.List

containsAll, isEmpty

Methods inherited from interface it.unimi.dsi.fastutil.objects.ReferenceList

addAll, addAll

Methods inherited from interface it.unimi.dsi.fastutil.Stack

isEmpty

Method Details

get

public K get(int i)

Specified by:

get in interface List<K>

remove

public boolean remove(Object k)

Specified by:

remove in interface Collection<K>

Specified by:

remove in interface List<K>

Overrides:

remove in class AbstractCollection<K>

remove

public K remove(int i)

Description copied from class: AbstractReferenceList

Specified by:

remove in interface List<K>

Overrides:

remove in class AbstractReferenceList<K>

contains

public boolean contains(Object k)

Description copied from class: AbstractReferenceList

Returns true if this list contains the specified element.

Specified by:

contains in interface Collection<K>

Specified by:

contains in interface List<K>

Overrides:

contains in class AbstractReferenceList<K>

See Also:

• List.contains(Object)

indexOf

public int indexOf(Object k)

Specified by:

indexOf in interface List<K>

Overrides:

indexOf in class AbstractReferenceList<K>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<K>

Specified by:

toArray in interface List<K>

Overrides:

toArray in class AbstractReferenceList<K>

listIterator

public ObjectListIterator<K> listIterator()

Description copied from class: AbstractReferenceList

Returns a type-specific list iterator on the list.

Specified by:

listIterator in interface List<K>

Specified by:

listIterator in interface ReferenceList<K>

Overrides:

listIterator in class AbstractReferenceList<K>

See Also:

• List.listIterator()

iterator

public ObjectListIterator<K> iterator()

Description copied from class: AbstractReferenceList

Returns a type-specific iterator on the elements of this collection.

Specified by:

iterator in interface Collection<K>

Specified by:

iterator in interface Iterable<K>

Specified by:

iterator in interface List<K>

Specified by:

iterator in interface ObjectIterable<K>

Specified by:

iterator in interface ReferenceCollection<K>

Specified by:

iterator in interface ReferenceList<K>

Overrides:

iterator in class AbstractReferenceList<K>

Returns:

a type-specific iterator on the elements of this collection.

See Also:

• Iterable.iterator()

spliterator

public ObjectSpliterator<K> spliterator()

Description copied from interface: ReferenceList

Returns a type-specific spliterator on the elements of this list.

List spliterators must report at least Spliterator.SIZED and Spliterator.ORDERED.

See List.spliterator() for more documentation on the requirements of the returned spliterator.

Specified by:

spliterator in interface Collection<K>

Specified by:

spliterator in interface Iterable<K>

Specified by:

spliterator in interface List<K>

Specified by:

spliterator in interface ObjectIterable<K>

Specified by:

spliterator in interface ReferenceCollection<K>

Specified by:

spliterator in interface ReferenceList<K>

Returns:

a type-specific spliterator on the elements of this collection.

listIterator

public ObjectListIterator<K> listIterator(int i)

Description copied from class: AbstractReferenceList

Returns a type-specific list iterator on the list starting at a given index.

Specified by:

listIterator in interface List<K>

Specified by:

listIterator in interface ReferenceList<K>

Overrides:

listIterator in class AbstractReferenceList<K>

See Also:

• List.listIterator(int)

subList

public ReferenceList<K> subList(int from,
 int to)

Description copied from interface: ReferenceList

Returns a type-specific view of the portion of this list from the index from, inclusive, to the index to, exclusive.

Specified by:

subList in interface List<K>

Specified by:

subList in interface ReferenceList<K>

Overrides:

subList in class AbstractReferenceList<K>

See Also:

• List.subList(int,int)

forEach

public void forEach(Consumer<? super K> action)

Description copied from class: AbstractReferenceList

Specified by:

forEach in interface Iterable<K>

Overrides:

forEach in class AbstractReferenceList<K>

addAll

public boolean addAll(int i,
 Collection<? extends K> c)

Description copied from class: AbstractReferenceList

Adds all of the elements in the specified collection to this list (optional operation).

Specified by:

addAll in interface List<K>

Overrides:

addAll in class AbstractReferenceList<K>

addAll

public boolean addAll(Collection<? extends K> c)

Description copied from class: AbstractReferenceList

Specified by:

addAll in interface Collection<K>

Specified by:

addAll in interface List<K>

Overrides:

addAll in class AbstractReferenceList<K>

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<K>

Specified by:

removeAll in interface List<K>

Overrides:

removeAll in class AbstractCollection<K>

retainAll

public boolean retainAll(Collection<?> c)

Specified by:

retainAll in interface Collection<K>

Specified by:

retainAll in interface List<K>

Overrides:

retainAll in class AbstractCollection<K>

removeIf

public boolean removeIf(Predicate<? super K> filter)

Specified by:

removeIf in interface Collection<K>

replaceAll

public void replaceAll(UnaryOperator<K> operator)

Specified by:

replaceAll in interface List<K>

sort

public void sort(Comparator<? super K> comparator)

Description copied from interface: ReferenceList

Sorts this list using a sort assured to be stable.

Pass null to sort using natural ordering.

Unless a subclass specifies otherwise, the results of the method if the list is concurrently modified during the sort are unspecified.

Specified by:

sort in interface List<K>

Specified by:

sort in interface ReferenceList<K>

unstableSort

public void unstableSort(Comparator<? super K> comparator)

Description copied from interface: ReferenceList

Sorts this list using a sort not assured to be stable. This differs from List.sort(java.util.Comparator) in that the results are not assured to be stable, but may be a bit faster.

Pass null to sort using natural ordering.

Unless a subclass specifies otherwise, the results of the method if the list is concurrently modified during the sort are unspecified.

Specified by:

unstableSort in interface ReferenceList<K>

getElements

public void getElements(int from,
 Object[] a,
 int offset,
 int length)

Description copied from class: AbstractReferenceList

Copies (hopefully quickly) elements of this type-specific list into the given array.

This is a trivial iterator-based implementation. It is expected that implementations will override this method with a more optimized version.

Specified by:

getElements in interface ReferenceList<K>

Overrides:

getElements in class AbstractReferenceList<K>

Parameters:

from - the start index (inclusive).

a - the destination array.

offset - the offset into the destination array where to store the first element copied.

length - the number of elements to be copied.

removeElements

public void removeElements(int from,
 int to)

Description copied from class: AbstractReferenceList

Removes (hopefully quickly) elements of this type-specific list.

This is a trivial iterator-based based implementation. It is expected that implementations will override this method with a more optimized version.

Specified by:

removeElements in interface ReferenceList<K>

Overrides:

removeElements in class AbstractReferenceList<K>

Parameters:

from - the start index (inclusive).

to - the end index (exclusive).

addElements

public void addElements(int index,
 K[] a)

Description copied from class: AbstractReferenceList

Add (hopefully quickly) elements to this type-specific list.

Specified by:

addElements in interface ReferenceList<K>

Overrides:

addElements in class AbstractReferenceList<K>

Parameters:

index - the index at which to add elements.

a - the array containing the elements.

addElements

public void addElements(int index,
 K[] a,
 int offset,
 int length)

Description copied from class: AbstractReferenceList

Add (hopefully quickly) elements to this type-specific list.

This is a trivial iterator-based implementation. It is expected that implementations will override this method with a more optimized version.

Specified by:

addElements in interface ReferenceList<K>

Overrides:

addElements in class AbstractReferenceList<K>

Parameters:

index - the index at which to add elements.

a - the array containing the elements.

offset - the offset of the first element to add.

length - the number of elements to add.

setElements

public void setElements(K[] a)

Description copied from interface: ReferenceList

Set (hopefully quickly) elements to match the array given.

Specified by:

setElements in interface ReferenceList<K>

Parameters:

a - the array containing the elements.

setElements

public void setElements(int index,
 K[] a)

Description copied from interface: ReferenceList

Set (hopefully quickly) elements to match the array given.

Specified by:

setElements in interface ReferenceList<K>

Parameters:

index - the index at which to start setting elements.

a - the array containing the elements.

setElements

public void setElements(int index,
 K[] a,
 int offset,
 int length)

Description copied from interface: ReferenceList

Set (hopefully quickly) elements to match the array given. Sets each in this list to the corresponding elements in the array, as if by

 ListIterator iter = listIterator(index);
 int i = 0;
 while (i < length) {
        iter.next();
        iter.set(a[offset + i++]);
 }
 

However, the exact implementation may be more efficient, taking into account whether random access is faster or not, or at the discretion of subclasses, abuse internals.

Specified by:

setElements in interface ReferenceList<K>

Overrides:

setElements in class AbstractReferenceList<K>

Parameters:

index - the index at which to start setting elements.

a - the array containing the elements

offset - the offset of the first element to add.

length - the number of elements to add.

size

public int size()

Specified by:

size in interface Collection<K>

Specified by:

size in interface List<K>

Specified by:

size in class AbstractCollection<K>

size

public void size(int size)

Description copied from interface: ReferenceList

Sets the size of this list.

If the specified size is smaller than the current size, the last elements are discarded. Otherwise, they are filled with 0/null/false.

Specified by:

size in interface ReferenceList<K>

Overrides:

size in class AbstractReferenceList<K>

Parameters:

size - the new size.

clear

public void clear()

Description copied from class: AbstractReferenceList

Specified by:

clear in interface Collection<K>

Specified by:

clear in interface List<K>

Overrides:

clear in class AbstractReferenceList<K>

clone

public Object clone()