Package it.unimi.dsi.fastutil.doubles

Class DoubleLists.Singleton

java.lang.Object

java.util.AbstractCollection<Double>

it.unimi.dsi.fastutil.doubles.AbstractDoubleCollection

it.unimi.dsi.fastutil.doubles.AbstractDoubleList

it.unimi.dsi.fastutil.doubles.DoubleLists.Singleton

All Implemented Interfaces:

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

Enclosing class:

DoubleLists

public static class DoubleLists.Singleton
extends AbstractDoubleList
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.doubles.AbstractDoubleList

AbstractDoubleList.DoubleSubList

Method Summary

Modifier and Type	Method	Description
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).
boolean	addAll(int i, Collection<? extends Double> c)	Adds all of the elements in the specified collection to this list (optional operation).
boolean	addAll(DoubleCollection c)	Adds all elements of the given type-specific collection to this collection.
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(Collection<? extends Double> c)
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.
void	clear()
Object	clone()
boolean	contains(double k)	Returns true if this list contains the specified element.
double	getDouble(int i)	Returns the element at the specified position in this list.
DoubleListIterator	iterator()	Returns a type-specific iterator on the elements of this collection.
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).
boolean	removeAll(DoubleCollection c)	Remove from this collection all elements in the given type-specific collection.
boolean	removeAll(Collection<?> c)
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.
boolean	retainAll(DoubleCollection c)	Retains in this collection only elements from the given type-specific collection.
boolean	retainAll(Collection<?> c)
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.
int	size()
void	size(int size)	Sets the size of this list.
void	sort(DoubleComparator comparator)	Sort a list using a type-specific comparator.
void	sort(Comparator<? super Double> comparator)	Deprecated.
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.
double[]	toDoubleArray()	Returns a primitive type array containing the items of this collection.
void	unstableSort(DoubleComparator comparator)	Sorts this list using a sort not assured to be stable.
void	unstableSort(Comparator<? super Double> comparator)	Deprecated.

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

add, add, compareTo, equals, getElements, hashCode, indexOf, lastIndexOf, peekDouble, popDouble, push, set, topDouble, toString

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

add, contains, containsAll, remove, toArray, toDoubleArray

Methods inherited from class java.util.AbstractCollection

containsAll, isEmpty, toArray, toArray

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 it.unimi.dsi.fastutil.doubles.DoubleCollection

containsAll, removeIf, removeIf, toArray, toDoubleArray

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

forEach, forEach

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

add, add, contains, get, indexOf, lastIndexOf, remove, remove, set

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

peek, pop, push, top

Methods inherited from interface java.util.List

containsAll, isEmpty, replaceAll, spliterator, toArray, toArray

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

isEmpty

Method Details

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: AbstractDoubleList

Removes a single instance of the specified element from this collection, if it is present (optional operation).

This implementation delegates to indexOf().

Specified by:

rem in interface DoubleCollection

Overrides:

rem in class AbstractDoubleList

See Also:

List.remove(Object)

removeDouble

public double removeDouble(int i)

Description copied from class: AbstractDoubleList

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

This implementation always throws an UnsupportedOperationException.

Specified by:

removeDouble in interface DoubleList

Overrides:

removeDouble in class AbstractDoubleList

See Also:

List.remove(int)

contains

public boolean contains(double k)

Description copied from class: AbstractDoubleList

Returns true if this list contains the specified element.

This implementation delegates to indexOf().

Specified by:

contains in interface DoubleCollection

Overrides:

contains in class AbstractDoubleList

See Also:

List.contains(Object)

toDoubleArray

public double[] toDoubleArray()

Description copied from interface: DoubleCollection

Returns a primitive type array containing the items of this collection.

Specified by:

toDoubleArray in interface DoubleCollection

Overrides:

toDoubleArray in class AbstractDoubleCollection

Returns:

a primitive type array containing the items of this collection.

See Also:

Collection.toArray()

listIterator

public DoubleListIterator listIterator()

Description copied from class: AbstractDoubleList

Returns a type-specific list iterator on the list.

This implementation delegates to listIterator(0).

Specified by:

listIterator in interface DoubleList

Specified by:

listIterator in interface List<Double>

Overrides:

listIterator in class AbstractDoubleList

See Also:

List.listIterator()

iterator

public DoubleListIterator iterator()

Description copied from class: AbstractDoubleList

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 AbstractDoubleList.listIterator().

Specified by:

iterator in interface Collection<Double>

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 List<Double>

Overrides:

iterator in class AbstractDoubleList

Returns:

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

See Also:

Iterable.iterator()

listIterator

public DoubleListIterator listIterator(int i)

Description copied from class: AbstractDoubleList

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 DoubleList

Specified by:

listIterator in interface List<Double>

Overrides:

listIterator in class AbstractDoubleList

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>

Overrides:

subList in class AbstractDoubleList

See Also:

List.subList(int,int)

addAll

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

Description copied from class: AbstractDoubleList

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

Specified by:

addAll in interface List<Double>

Overrides:

addAll in class AbstractDoubleList

addAll

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

Description copied from class: AbstractDoubleList

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

Specified by:

addAll in interface Collection<Double>

Specified by:

addAll in interface List<Double>

Overrides:

addAll in class AbstractDoubleList

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<Double>

Specified by:

removeAll in interface List<Double>

Overrides:

removeAll in class AbstractCollection<Double>

retainAll

public boolean retainAll(Collection<?> c)

Specified by:

retainAll in interface Collection<Double>

Specified by:

retainAll in interface List<Double>

Overrides:

retainAll in class AbstractCollection<Double>

addAll

public boolean addAll(DoubleList c)

Description copied from class: AbstractDoubleList

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

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

Specified by:

addAll in interface DoubleList

Overrides:

addAll in class AbstractDoubleList

See Also:

List.add(int,Object)

addAll

public boolean addAll(int i, DoubleList c)

Description copied from class: AbstractDoubleList

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

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

Specified by:

addAll in interface DoubleList

Overrides:

addAll in class AbstractDoubleList

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

Overrides:

addAll in class AbstractDoubleList

See Also:

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

addAll

public boolean addAll(DoubleCollection c)

Description copied from class: AbstractDoubleList

Adds all elements of the given type-specific collection to this collection.

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

Specified by:

addAll in interface DoubleCollection

Overrides:

addAll in class AbstractDoubleList

Parameters:

c - a type-specific collection.

Returns:

true if this collection changed as a result of the call.

See Also:

Collection.addAll(Collection)

removeAll

public boolean removeAll(DoubleCollection c)

Description copied from interface: DoubleCollection

Remove from this collection all elements in the given type-specific collection.

Specified by:

removeAll in interface DoubleCollection

Overrides:

removeAll in class AbstractDoubleCollection

Parameters:

c - a type-specific collection.

Returns:

true if this collection changed as a result of the call.

See Also:

Collection.removeAll(Collection)

retainAll

public boolean retainAll(DoubleCollection c)

Description copied from interface: DoubleCollection

Retains in this collection only elements from the given type-specific collection.

Specified by:

retainAll in interface DoubleCollection

Overrides:

retainAll in class AbstractDoubleCollection

Parameters:

c - a type-specific collection.

Returns:

true if this collection changed as a result of the call.

See Also:

Collection.retainAll(Collection)

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

removeElements

public void removeElements(int from, int to)

Description copied from class: AbstractDoubleList

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 DoubleList

Overrides:

removeElements in class AbstractDoubleList

Parameters:

from - the start index (inclusive).

to - the end index (exclusive).

addElements

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

Description copied from class: AbstractDoubleList

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

This implementation delegates to the analogous method for array fragments.

Specified by:

addElements in interface DoubleList

Overrides:

addElements in class AbstractDoubleList

Parameters:

index - the index at which to add elements.

a - the array containing the elements.

addElements

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

Description copied from class: AbstractDoubleList

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 DoubleList

Overrides:

addElements in class AbstractDoubleList

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(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 int size()

Specified by:

size in interface Collection<Double>

Specified by:

size in interface List<Double>

Specified by:

size in class AbstractCollection<Double>

size

public void size(int size)

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

Overrides:

size in class AbstractDoubleList

Parameters:

size - the new size.

clear

public void clear()

Description copied from class: AbstractDoubleList

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

Specified by:

clear in interface Collection<Double>

Specified by:

clear in interface List<Double>

Overrides:

clear in class AbstractDoubleList

clone

public Object clone()