it.unimi.dsi.fastutil.objects

Class ObjectLists.EmptyList<K>

java.lang.Object

java.util.AbstractCollection<K>

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

it.unimi.dsi.fastutil.objects.ObjectCollections.EmptyCollection<K>

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

All Implemented Interfaces:

ObjectCollection<K>, ObjectIterable<K>, ObjectList<K>, java.io.Serializable, java.lang.Cloneable, java.lang.Comparable<java.util.List<? extends K>>, java.lang.Iterable<K>, java.util.Collection<K>, java.util.List<K>, java.util.RandomAccess

Enclosing class:

ObjectLists

public static class ObjectLists.EmptyList<K>
extends ObjectCollections.EmptyCollection<K>
implements ObjectList<K>, java.util.RandomAccess, java.io.Serializable, java.lang.Cloneable

An immutable class representing an empty type-specific list.

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

See Also:

Serialized Form

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	EmptyList()

Method Summary

Modifier and Type	Method and Description
void	add(int index, K k)
boolean	addAll(int i, java.util.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.
java.lang.Object	clone()
int	compareTo(java.util.List<? extends K> o)
boolean	equals(java.lang.Object o)
K	get(int i)
void	getElements(int from, java.lang.Object[] a, int offset, int length) Copies (hopefully quickly) elements of this type-specific list into the given array.
int	hashCode()
int	indexOf(java.lang.Object k)
ObjectListIterator<K>	iterator() Returns a type-specific iterator on the elements of this collection.
int	lastIndexOf(java.lang.Object k)
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(java.lang.Object k)
void	removeElements(int from, int to) Removes (hopefully quickly) elements of this type-specific list.
void	replaceAll(java.util.function.UnaryOperator<K> operator)
K	set(int index, K k)
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.
void	size(int s) Sets the size of this list.
void	sort(java.util.Comparator<? super K> comparator) Sorts this list using a sort assured to be stable.
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.
java.lang.String	toString()
void	unstableSort(java.util.Comparator<? super K> comparator) Sorts this list using a sort not assured to be stable.

Methods inherited from class it.unimi.dsi.fastutil.objects.ObjectCollections.EmptyCollection

addAll, clear, contains, containsAll, forEach, removeAll, removeIf, retainAll, size, spliterator, toArray, toArray

Methods inherited from class java.util.AbstractCollection

add, isEmpty

Methods inherited from class java.lang.Object

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

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

addAll, addAll, of, of, of, of, of, spliterator

Methods inherited from interface java.util.List

add, addAll, clear, contains, containsAll, isEmpty, removeAll, retainAll, size, toArray, toArray

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Constructor Detail

EmptyList

protected EmptyList()

Method Detail

get

public K get(int i)

Specified by:

get in interface java.util.List<K>

remove

public boolean remove(java.lang.Object k)

Specified by:

remove in interface java.util.Collection<K>

Specified by:

remove in interface java.util.List<K>

Overrides:

remove in class java.util.AbstractCollection<K>

remove

public K remove(int i)

Specified by:

remove in interface java.util.List<K>

add

public void add(int index,
                K k)

Specified by:

add in interface java.util.List<K>

set

public K set(int index,
             K k)

Specified by:

set in interface java.util.List<K>

indexOf

public int indexOf(java.lang.Object k)

Specified by:

indexOf in interface java.util.List<K>

lastIndexOf

public int lastIndexOf(java.lang.Object k)

Specified by:

lastIndexOf in interface java.util.List<K>

addAll

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

Specified by:

addAll in interface java.util.List<K>

replaceAll

public void replaceAll(java.util.function.UnaryOperator<K> operator)

Specified by:

replaceAll in interface java.util.List<K>

sort

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

Description copied from interface: ObjectList

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 ObjectList<K>

Specified by:

sort in interface java.util.List<K>

unstableSort

public void unstableSort(java.util.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.

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 ObjectList<K>

listIterator

public ObjectListIterator<K> listIterator()

Description copied from interface: ObjectList

Returns a type-specific list iterator on the list.

Specified by:

listIterator in interface ObjectList<K>

Specified by:

listIterator in interface java.util.List<K>

See Also:

List.listIterator()

iterator

public ObjectListIterator<K> iterator()

Description copied from interface: ObjectCollection

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

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 java.lang.Iterable<K>

Specified by:

iterator in interface java.util.Collection<K>

Specified by:

iterator in interface java.util.List<K>

Overrides:

iterator in class ObjectCollections.EmptyCollection<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 interface: ObjectList

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

Specified by:

listIterator in interface ObjectList<K>

Specified by:

listIterator in interface java.util.List<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.

Specified by:

subList in interface ObjectList<K>

Specified by:

subList in interface java.util.List<K>

See Also:

List.subList(int,int)

getElements

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

Description copied from interface: ObjectList

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

Specified by:

getElements in interface ObjectList<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 interface: ObjectList

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

Specified by:

removeElements in interface ObjectList<K>

Parameters:

from - the start index (inclusive).

to - the end index (exclusive).

addElements

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

Description copied from interface: ObjectList

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

Specified by:

addElements in interface ObjectList<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.

addElements

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

Description copied from interface: ObjectList

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

Specified by:

addElements in interface ObjectList<K>

Parameters:

index - the index at which to add elements.

a - the array containing the elements.

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 void size(int s)

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>

Parameters:

s - the new size.

compareTo

public int compareTo(java.util.List<? extends K> o)

Specified by:

compareTo in interface java.lang.Comparable<java.util.List<? extends K>>

clone

public java.lang.Object clone()

Overrides:

clone in class java.lang.Object

hashCode

public int hashCode()

Specified by:

hashCode in interface java.util.Collection<K>

Specified by:

hashCode in interface java.util.List<K>

Overrides:

hashCode in class ObjectCollections.EmptyCollection<K>

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in interface java.util.Collection<K>

Specified by:

equals in interface java.util.List<K>

Overrides:

equals in class ObjectCollections.EmptyCollection<K>

toString

public java.lang.String toString()

Overrides:

toString in class AbstractObjectCollection<K>