it.unimi.dsi.fastutil.doubles

Class DoubleLists.EmptyList

java.lang.Object

java.util.AbstractCollection<Double>

it.unimi.dsi.fastutil.doubles.AbstractDoubleCollection

it.unimi.dsi.fastutil.doubles.DoubleCollections.EmptyCollection

it.unimi.dsi.fastutil.doubles.DoubleLists.EmptyList

All Implemented Interfaces:

DoubleCollection, DoubleIterable, DoubleList, Serializable, Cloneable, Comparable<List<? extends Double>>, Iterable<Double>, Collection<Double>, List<Double>, RandomAccess

Enclosing class:

DoubleLists

public static class DoubleLists.EmptyList
extends DoubleCollections.EmptyCollection
implements DoubleList, RandomAccess, Serializable, 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

Method Summary

Modifier and Type	Method and Description
boolean	add(Double k) Deprecated. Please use the corresponding type-specific method instead.
void	add(int index, double k) Inserts the specified element at the specified position in this list (optional operation).
void	add(int index, Double k) Deprecated. Please use the corresponding type-specific method instead.
boolean	addAll(DoubleList c) Appends all of the elements in the specified type-specific list to the end of this type-specific list (optional operation).
boolean	addAll(int i, Collection<? extends Double> c)
boolean	addAll(int i, DoubleCollection c) Inserts all of the elements in the specified type-specific collection into this type-specific list at the specified position (optional operation).
boolean	addAll(int i, DoubleList c) Inserts all of the elements in the specified type-specific list into this type-specific list at the specified position (optional operation).
void	addElements(int index, double[] a) Add (hopefully quickly) elements to this type-specific list.
void	addElements(int index, double[] a, int offset, int length) Add (hopefully quickly) elements to this type-specific list.
Object	clone()
int	compareTo(List<? extends Double> o)
boolean	equals(Object o)
Double	get(int index) Deprecated. Please use the corresponding type-specific method instead.
double	getDouble(int i) Returns the element at the specified position in this list.
void	getElements(int from, double[] a, int offset, int length) Copies (hopefully quickly) elements of this type-specific list into the given array.
int	hashCode()
int	indexOf(double k) Returns the index of the first occurrence of the specified element in this list, or -1 if this list does not contain the element.
int	indexOf(Object k) Deprecated. Please use the corresponding type-specific method instead.
DoubleListIterator	iterator() Returns a type-specific iterator on the elements of this collection.
int	lastIndexOf(double k) Returns the index of the last occurrence of the specified element in this list, or -1 if this list does not contain the element.
int	lastIndexOf(Object k) Deprecated. Please use the corresponding type-specific method instead.
DoubleListIterator	listIterator() Returns a type-specific list iterator on the list.
DoubleListIterator	listIterator(int i) Returns a type-specific list iterator on the list starting at a given index.
boolean	rem(double k) Removes a single instance of the specified element from this collection, if it is present (optional operation).
Double	remove(int k) Deprecated. Please use the corresponding type-specific method instead.
double	removeDouble(int i) Removes the element at the specified position in this list (optional operation).
void	removeElements(int from, int to) Removes (hopefully quickly) elements of this type-specific list.
double	set(int index, double k) Replaces the element at the specified position in this list with the specified element (optional operation).
Double	set(int index, Double k) Deprecated. Please use the corresponding type-specific method instead.
void	setElements(double[] a) Set (hopefully quickly) elements to match the array given.
void	setElements(int index, double[] a) Set (hopefully quickly) elements to match the array given.
void	setElements(int index, double[] a, int offset, int length) Set (hopefully quickly) elements to match the array given.
void	size(int s) Sets the size of this list.
void	sort(Comparator<? super Double> comparator) Deprecated.
void	sort(DoubleComparator comparator) Sort a list using a type-specific comparator.
DoubleList	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.
String	toString()
void	unstableSort(Comparator<? super Double> comparator) Deprecated.
void	unstableSort(DoubleComparator comparator) Sorts this list using a sort not assured to be stable.

Methods inherited from class it.unimi.dsi.fastutil.doubles.DoubleCollections.EmptyCollection

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

Methods inherited from class it.unimi.dsi.fastutil.doubles.AbstractDoubleCollection

add, contains, containsAll, remove, toArray, toDoubleArray, toDoubleArray

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.doubles.DoubleList

add, contains, remove

Methods inherited from interface java.util.List

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

Methods inherited from interface it.unimi.dsi.fastutil.doubles.DoubleCollection

addAll, contains, containsAll, removeAll, removeIf, removeIf, retainAll, toArray, toDoubleArray, toDoubleArray

Methods inherited from interface java.util.Collection

parallelStream, stream

Methods inherited from interface it.unimi.dsi.fastutil.doubles.DoubleIterable

forEach, forEach

Method Detail

getDouble

public double getDouble(int i)

Description copied from interface: DoubleList

Returns the element at the specified position in this list.

Specified by:

getDouble in interface DoubleList

See Also:

List.get(int)

rem

public boolean rem(double k)

Description copied from class: AbstractDoubleCollection

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 DoubleCollection

Overrides:

rem in class AbstractDoubleCollection

See Also:

Collection.remove(Object)

removeDouble

public double removeDouble(int i)

Description copied from interface: DoubleList

Removes the element at the specified position in this list (optional operation).

Specified by:

removeDouble in interface DoubleList

See Also:

List.remove(int)

add

public void add(int index,
                double k)

Description copied from interface: DoubleList

Inserts the specified element at the specified position in this list (optional operation).

Specified by:

add in interface DoubleList

See Also:

List.add(int,Object)

set

public double set(int index,
                  double k)

Description copied from interface: DoubleList

Replaces the element at the specified position in this list with the specified element (optional operation).

Specified by:

set in interface DoubleList

See Also:

List.set(int,Object)

indexOf

public int indexOf(double k)

Description copied from interface: DoubleList

Returns the index of the first occurrence of the specified element in this list, or -1 if this list does not contain the element.

Specified by:

indexOf in interface DoubleList

See Also:

List.indexOf(Object)

lastIndexOf

public int lastIndexOf(double k)

Description copied from interface: DoubleList

Returns the index of the last occurrence of the specified element in this list, or -1 if this list does not contain the element.

Specified by:

lastIndexOf in interface DoubleList

See Also:

List.lastIndexOf(Object)

addAll

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

Specified by:

addAll in interface List<Double>

addAll

public boolean addAll(DoubleList c)

Description copied from interface: DoubleList

Appends all of the elements in the specified type-specific list to the end of this type-specific list (optional operation).

Specified by:

addAll in interface DoubleList

See Also:

List.add(int,Object)

addAll

public boolean addAll(int i,
                      DoubleCollection c)

Description copied from interface: DoubleList

Inserts all of the elements in the specified type-specific collection into this type-specific list at the specified position (optional operation).

Specified by:

addAll in interface DoubleList

See Also:

List.addAll(int,java.util.Collection)

addAll

public boolean addAll(int i,
                      DoubleList c)

Description copied from interface: DoubleList

Inserts all of the elements in the specified type-specific list into this type-specific list at the specified position (optional operation).

Specified by:

addAll in interface DoubleList

See Also:

List.add(int,Object)

add

@Deprecated
public void add(int index,
                            Double k)

Deprecated. Please use the corresponding type-specific method instead.

Specified by:

add in interface DoubleList

Specified by:

add in interface List<Double>

get

@Deprecated
public Double get(int index)

Deprecated. Please use the corresponding type-specific method instead.

Specified by:

get in interface DoubleList

Specified by:

get in interface List<Double>

add

@Deprecated
public boolean add(Double k)

Deprecated. Please use the corresponding type-specific method instead.

Specified by:

add in interface DoubleCollection

Specified by:

add in interface DoubleList

Specified by:

add in interface Collection<Double>

Specified by:

add in interface List<Double>

Overrides:

add in class AbstractDoubleCollection

set

@Deprecated
public Double set(int index,
                              Double k)

Deprecated. Please use the corresponding type-specific method instead.

Specified by:

set in interface DoubleList

Specified by:

set in interface List<Double>

remove

@Deprecated
public Double remove(int k)

Deprecated. Please use the corresponding type-specific method instead.

Specified by:

remove in interface DoubleList

Specified by:

remove in interface List<Double>

indexOf

@Deprecated
public int indexOf(Object k)

Deprecated. Please use the corresponding type-specific method instead.

Specified by:

indexOf in interface DoubleList

Specified by:

indexOf in interface List<Double>

lastIndexOf

@Deprecated
public int lastIndexOf(Object k)

Deprecated. Please use the corresponding type-specific method instead.

Specified by:

lastIndexOf in interface DoubleList

Specified by:

lastIndexOf in interface List<Double>

sort

public void sort(DoubleComparator comparator)

Description copied from interface: DoubleList

Sort a list using a type-specific comparator.

Pass null to sort using natural ordering.

Specified by:

sort in interface DoubleList

See Also:

List.sort(java.util.Comparator)

unstableSort

public void unstableSort(DoubleComparator comparator)

Description copied from interface: DoubleList

Sorts this list using a sort not assured to be stable.

Pass null to sort using natural ordering.

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 DoubleList

sort

@Deprecated
public void sort(Comparator<? super Double> comparator)

Deprecated.

Description copied from interface: DoubleList

Specified by:

sort in interface DoubleList

Specified by:

sort in interface List<Double>

unstableSort

@Deprecated
public void unstableSort(Comparator<? super Double> comparator)

Deprecated.

Description copied from interface: DoubleList

Sorts this list using a sort not assured to be stable.

Specified by:

unstableSort in interface DoubleList

listIterator

public DoubleListIterator listIterator()

Description copied from interface: DoubleList

Returns a type-specific list iterator on the list.

Specified by:

listIterator in interface DoubleList

Specified by:

listIterator in interface List<Double>

See Also:

List.listIterator()

iterator

public DoubleListIterator iterator()

Description copied from interface: DoubleCollection

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.

Specified by:

iterator in interface DoubleCollection

Specified by:

iterator in interface DoubleIterable

Specified by:

iterator in interface DoubleList

Specified by:

iterator in interface Iterable<Double>

Specified by:

iterator in interface Collection<Double>

Specified by:

iterator in interface List<Double>

Overrides:

iterator in class DoubleCollections.EmptyCollection

Returns:

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

See Also:

Iterable.iterator()

listIterator

public DoubleListIterator listIterator(int i)

Description copied from interface: DoubleList

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

Specified by:

listIterator in interface DoubleList

Specified by:

listIterator in interface List<Double>

See Also:

List.listIterator(int)

subList

public DoubleList subList(int from,
                          int to)

Description copied from interface: DoubleList

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 DoubleList

Specified by:

subList in interface List<Double>

See Also:

List.subList(int,int)

getElements

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

Description copied from interface: DoubleList

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

Specified by:

getElements in interface DoubleList

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: DoubleList

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

Specified by:

removeElements in interface DoubleList

Parameters:

from - the start index (inclusive).

to - the end index (exclusive).

addElements

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

Description copied from interface: DoubleList

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

Specified by:

addElements in interface DoubleList

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,
                        double[] a)

Description copied from interface: DoubleList

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

Specified by:

addElements in interface DoubleList

Parameters:

index - the index at which to add elements.

a - the array containing the elements.

setElements

public void setElements(double[] a)

Description copied from interface: DoubleList

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

Specified by:

setElements in interface DoubleList

Parameters:

a - the array containing the elements.

setElements

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

Description copied from interface: DoubleList

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

Specified by:

setElements in interface DoubleList

Parameters:

index - the index at which to start setting elements.

a - the array containing the elements.

setElements

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

Description copied from interface: DoubleList

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 DoubleList

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: DoubleList

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 DoubleList

Parameters:

s - the new size.

compareTo

public int compareTo(List<? extends Double> o)

Specified by:

compareTo in interface Comparable<List<? extends Double>>

clone

public Object clone()

Overrides:

clone in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<Double>

Specified by:

hashCode in interface List<Double>

Overrides:

hashCode in class DoubleCollections.EmptyCollection

equals

public boolean equals(Object o)

Specified by:

equals in interface Collection<Double>

Specified by:

equals in interface List<Double>

Overrides:

equals in class DoubleCollections.EmptyCollection

toString

public String toString()

Overrides:

toString in class AbstractDoubleCollection