it.unimi.dsi.fastutil.objects

Class ObjectLists.Singleton<K>

java.lang.Object

java.util.AbstractCollection<K>

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

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

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

All Implemented Interfaces:

ObjectCollection<K>, ObjectIterable<K>, ObjectList<K>, Stack<K>, Serializable, Cloneable, Comparable<List<? extends K>>, Iterable<K>, Collection<K>, List<K>, RandomAccess

Enclosing class:

ObjectLists

public static class ObjectLists.Singleton<K>
extends AbstractObjectList<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.AbstractObjectList

AbstractObjectList.ObjectSubList<K>

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Singleton(K element)

Method Summary

Modifier and Type	Method and Description
boolean	addAll(Collection<? extends K> c)
boolean	addAll(int i, Collection<? extends K> c) Adds all of the elements in the specified collection to this list (optional operation).
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.
K	get(int i)
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	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)
ObjectList<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.AbstractObjectList

add, add, compareTo, ensureIndex, ensureRestrictedIndex, equals, getElements, hashCode, indexOf, lastIndexOf, peek, pop, push, set, top, 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 java.util.List

containsAll, isEmpty, replaceAll, spliterator, toArray

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

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

isEmpty

Constructor Detail

Singleton

protected Singleton(K element)

Method Detail

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: AbstractObjectList

This implementation always throws an UnsupportedOperationException.

Specified by:

remove in interface List<K>

Overrides:

remove in class AbstractObjectList<K>

contains

public boolean contains(Object k)

Description copied from class: AbstractObjectList

Returns true if this list contains the specified element.

This implementation delegates to indexOf().

Specified by:

contains in interface Collection<K>

Specified by:

contains in interface List<K>

Overrides:

contains in class AbstractObjectList<K>

See Also:

List.contains(Object)

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<K>

Specified by:

toArray in interface List<K>

Overrides:

toArray in class AbstractCollection<K>

listIterator

public ObjectListIterator<K> listIterator()

Description copied from class: AbstractObjectList

Returns a type-specific list iterator on the list.

This implementation delegates to listIterator(0).

Specified by:

listIterator in interface ObjectList<K>

Specified by:

listIterator in interface List<K>

Overrides:

listIterator in class AbstractObjectList<K>

See Also:

List.listIterator()

iterator

public ObjectListIterator<K> iterator()

Description copied from class: AbstractObjectList

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

Note that this specification strengthens the one given in Iterable.iterator(), which was already strengthened in the corresponding type-specific class, but was weakened by the fact that this interface extends Collection.

This implementation delegates to AbstractObjectList.listIterator().

Specified by:

iterator in interface ObjectCollection<K>

Specified by:

iterator in interface ObjectIterable<K>

Specified by:

iterator in interface ObjectList<K>

Specified by:

iterator in interface Iterable<K>

Specified by:

iterator in interface Collection<K>

Specified by:

iterator in interface List<K>

Overrides:

iterator in class AbstractObjectList<K>

Returns:

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

See Also:

Iterable.iterator()

listIterator

public ObjectListIterator<K> listIterator(int i)

Description copied from class: AbstractObjectList

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

This implementation is based on the random-access methods.

Specified by:

listIterator in interface ObjectList<K>

Specified by:

listIterator in interface List<K>

Overrides:

listIterator in class AbstractObjectList<K>

See Also:

List.listIterator(int)

subList

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

Description copied from interface: ObjectList

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

Note that this specification strengthens the one given in List.subList(int,int).

Specified by:

subList in interface ObjectList<K>

Specified by:

subList in interface List<K>

Overrides:

subList in class AbstractObjectList<K>

See Also:

List.subList(int,int)

addAll

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

Description copied from class: AbstractObjectList

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 AbstractObjectList<K>

addAll

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

Description copied from class: AbstractObjectList

This implementation delegates to the type-specific version of List.addAll(int, Collection).

Specified by:

addAll in interface Collection<K>

Specified by:

addAll in interface List<K>

Overrides:

addAll in class AbstractObjectList<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>

sort

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

Specified by:

sort in interface List<K>

unstableSort

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

Description copied from interface: ObjectList

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.

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 ObjectList<K>

removeElements

public void removeElements(int from,
                           int to)

Description copied from class: AbstractObjectList

Removes (hopefully quickly) elements of 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:

removeElements in interface ObjectList<K>

Overrides:

removeElements in class AbstractObjectList<K>

Parameters:

from - the start index (inclusive).

to - the end index (exclusive).

addElements

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

Description copied from class: AbstractObjectList

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

This implementation delegates to the analogous method for array fragments.

Specified by:

addElements in interface ObjectList<K>

Overrides:

addElements in class AbstractObjectList<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: AbstractObjectList

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 ObjectList<K>

Overrides:

addElements in class AbstractObjectList<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: ObjectList

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

Specified by:

setElements in interface ObjectList<K>

Parameters:

a - the array containing the elements.

setElements

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

Description copied from interface: ObjectList

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

Specified by:

setElements in interface ObjectList<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: ObjectList

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 ObjectList<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: ObjectList

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 ObjectList<K>

Overrides:

size in class AbstractObjectList<K>

Parameters:

size - the new size.

clear

public void clear()

Description copied from class: AbstractObjectList

This implementation delegates to AbstractObjectList.removeElements(int, int).

Specified by:

clear in interface Collection<K>

Specified by:

clear in interface List<K>

Overrides:

clear in class AbstractObjectList<K>

clone

public Object clone()

Overrides:

clone in class Object