Package it.unimi.dsi.fastutil.booleans

Class BooleanCollections.EmptyCollection

java.lang.Object

java.util.AbstractCollection<Boolean>

it.unimi.dsi.fastutil.booleans.AbstractBooleanCollection

it.unimi.dsi.fastutil.booleans.BooleanCollections.EmptyCollection

All Implemented Interfaces:

BooleanCollection, BooleanIterable, Iterable<Boolean>, Collection<Boolean>

Direct Known Subclasses:

BooleanBigLists.EmptyBigList, BooleanLists.EmptyList, BooleanSets.EmptySet

Enclosing class:

BooleanCollections

public abstract static class BooleanCollections.EmptyCollection
extends AbstractBooleanCollection

An immutable class representing an empty type-specific collection.

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

Method Summary

Modifier and Type	Method	Description
boolean	addAll(BooleanCollection c)	Adds all elements of the given type-specific collection to this collection.
boolean	addAll(Collection<? extends Boolean> c)
void	clear()
boolean	contains(boolean k)	Returns true if this collection contains the specified element.
boolean	containsAll(BooleanCollection c)	Checks whether this collection contains all elements from the given type-specific collection.
boolean	containsAll(Collection<?> c)
boolean	equals(Object o)
void	forEach(BooleanConsumer action)	Performs the given action for each element of this type-specific Iterable until all elements have been processed or the action throws an exception.
void	forEach(Consumer<? super Boolean> action)	Deprecated.
int	hashCode()
BooleanBidirectionalIterator	iterator()	Returns a type-specific iterator on the elements of this collection.
boolean	removeAll(BooleanCollection c)	Remove from this collection all elements in the given type-specific collection.
boolean	removeAll(Collection<?> c)
boolean	removeIf(BooleanPredicate filter)	Remove from this collection all elements which satisfy the given predicate.
boolean	removeIf(Predicate<? super Boolean> filter)	Deprecated.
boolean	retainAll(BooleanCollection c)	Retains in this collection only elements from the given type-specific collection.
boolean	retainAll(Collection<?> c)
int	size()
BooleanSpliterator	spliterator()	Returns a type-specific spliterator on the elements of this collection.
Object[]	toArray()
<T> T[]	toArray(T[] array)
boolean[]	toBooleanArray()	Returns a primitive type array containing the items of this collection.
boolean[]	toBooleanArray(boolean[] a)	Deprecated.

Methods inherited from class it.unimi.dsi.fastutil.booleans.AbstractBooleanCollection

add, add, contains, rem, remove, toArray, toString

Methods inherited from class java.util.AbstractCollection

isEmpty

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

isEmpty, parallelStream, stream, toArray

Method Details

contains

public boolean contains(boolean k)

Description copied from class: AbstractBooleanCollection

Returns true if this collection contains the specified element.

Specified by:

contains in interface BooleanCollection

Overrides:

contains in class AbstractBooleanCollection

See Also:

• Collection.contains(Object)

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<Boolean>

Overrides:

toArray in class AbstractCollection<Boolean>

toArray

public <T> T[] toArray(T[] array)

Specified by:

toArray in interface Collection<Boolean>

Overrides:

toArray in class AbstractCollection<Boolean>

iterator

public BooleanBidirectionalIterator iterator()

Description copied from interface: BooleanCollection

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

Specified by:

iterator in interface BooleanCollection

Specified by:

iterator in interface BooleanIterable

Specified by:

iterator in interface Collection<Boolean>

Specified by:

iterator in interface Iterable<Boolean>

Specified by:

iterator in class AbstractBooleanCollection

Returns:

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

See Also:

• Iterable.iterator()

spliterator

public BooleanSpliterator spliterator()

Description copied from interface: BooleanCollection

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

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

Returns:

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

size

public int size()

Specified by:

size in interface Collection<Boolean>

Specified by:

size in class AbstractCollection<Boolean>

clear

public void clear()

Specified by:

clear in interface Collection<Boolean>

Overrides:

clear in class AbstractCollection<Boolean>

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<Boolean>

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Specified by:

equals in interface Collection<Boolean>

Overrides:

equals in class Object

forEach

@Deprecated
public void forEach(Consumer<? super Boolean> action)

Deprecated.

Description copied from interface: BooleanIterable

containsAll

public boolean containsAll(Collection<?> c)

Description copied from class: AbstractBooleanCollection

Specified by:

containsAll in interface Collection<Boolean>

Overrides:

containsAll in class AbstractBooleanCollection

addAll

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

Description copied from class: AbstractBooleanCollection

Specified by:

addAll in interface Collection<Boolean>

Overrides:

addAll in class AbstractBooleanCollection

removeAll

public boolean removeAll(Collection<?> c)

Description copied from class: AbstractBooleanCollection

Specified by:

removeAll in interface Collection<Boolean>

Overrides:

removeAll in class AbstractBooleanCollection

retainAll

public boolean retainAll(Collection<?> c)

Description copied from class: AbstractBooleanCollection

Specified by:

retainAll in interface Collection<Boolean>

Overrides:

retainAll in class AbstractBooleanCollection

removeIf

@Deprecated
public boolean removeIf(Predicate<? super Boolean> filter)

Deprecated.

Description copied from interface: BooleanCollection

toBooleanArray

public boolean[] toBooleanArray()

Description copied from interface: BooleanCollection

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

Specified by:

toBooleanArray in interface BooleanCollection

Overrides:

toBooleanArray in class AbstractBooleanCollection

Returns:

a primitive type array containing the items of this collection.

See Also:

• Collection.toArray()

toBooleanArray

@Deprecated
public boolean[] toBooleanArray(boolean[] a)

Deprecated.

Description copied from class: AbstractBooleanCollection

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

Note that, contrarily to Collection.toArray(Object[]), this methods just writes all elements of this collection: no special value will be added after the last one.

Specified by:

toBooleanArray in interface BooleanCollection

Overrides:

toBooleanArray in class AbstractBooleanCollection

Parameters:

a - if this array is big enough, it will be used to store this collection.

Returns:

a primitive type array containing the items of this collection.

See Also:

• Collection.toArray(Object[])

forEach

public void forEach(BooleanConsumer action)

Description copied from interface: BooleanIterable

Performs the given action for each element of this type-specific Iterable until all elements have been processed or the action throws an exception.

Parameters:

action - the action to be performed for each element.

See Also:

• Iterable.forEach(java.util.function.Consumer)

containsAll

public boolean containsAll(BooleanCollection c)

Description copied from interface: BooleanCollection

Checks whether this collection contains all elements from the given type-specific collection.

Specified by:

containsAll in interface BooleanCollection

Overrides:

containsAll in class AbstractBooleanCollection

Parameters:

c - a type-specific collection.

Returns:

true if this collection contains all elements of the argument.

See Also:

• Collection.containsAll(Collection)

addAll

public boolean addAll(BooleanCollection c)

Description copied from interface: BooleanCollection

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

Specified by:

addAll in interface BooleanCollection

Overrides:

addAll in class AbstractBooleanCollection

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(BooleanCollection c)

Description copied from interface: BooleanCollection

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

Specified by:

removeAll in interface BooleanCollection

Overrides:

removeAll in class AbstractBooleanCollection

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(BooleanCollection c)

Description copied from interface: BooleanCollection

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

Specified by:

retainAll in interface BooleanCollection

Overrides:

retainAll in class AbstractBooleanCollection

Parameters:

c - a type-specific collection.

Returns:

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

See Also:

• Collection.retainAll(Collection)

removeIf

public boolean removeIf(BooleanPredicate filter)

Description copied from interface: BooleanCollection

Remove from this collection all elements which satisfy the given predicate.

Parameters:

filter - a predicate which returns true for elements to be removed.

Returns:

true if any elements were removed.

See Also:

• Collection.removeIf(java.util.function.Predicate)