Package it.unimi.dsi.fastutil.ints
Class IntCollections.EmptyCollection
java.lang.Object
java.util.AbstractCollection<Integer>
it.unimi.dsi.fastutil.ints.AbstractIntCollection
it.unimi.dsi.fastutil.ints.IntCollections.EmptyCollection
- All Implemented Interfaces:
IntCollection
,IntIterable
,Iterable<Integer>
,Collection<Integer>
- Direct Known Subclasses:
IntBigLists.EmptyBigList
,IntLists.EmptyList
,IntSets.EmptySet
- Enclosing class:
IntCollections
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.
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Method Summary
Modifier and TypeMethodDescriptionboolean
Adds all elements of the given type-specific collection to this collection.boolean
addAll
(Collection<? extends Integer> c) void
clear()
boolean
contains
(int k) Returnstrue
if this collection contains the specified element.boolean
Checks whether this collection contains all elements from the given type-specific collection.boolean
containsAll
(Collection<?> c) boolean
void
Deprecated.void
forEach
(IntConsumer action) Performs the given action for each element of this type-specificIterable
until all elements have been processed or the action throws an exception.int
hashCode()
iterator()
Returns a type-specific iterator on the elements of this collection.boolean
Remove from this collection all elements in the given type-specific collection.boolean
removeAll
(Collection<?> c) boolean
removeIf
(IntPredicate filter) Remove from this collection all elements which satisfy the given predicate.boolean
Deprecated.boolean
Retains in this collection only elements from the given type-specific collection.boolean
retainAll
(Collection<?> c) int
size()
Returns a type-specific spliterator on the elements of this collection.Object[]
toArray()
<T> T[]
toArray
(T[] array) int[]
Returns a primitive type array containing the items of this collection.int[]
toIntArray
(int[] a) Deprecated.Methods inherited from class it.unimi.dsi.fastutil.ints.AbstractIntCollection
add, add, contains, forEach, rem, remove, removeIf, toArray, toString
Methods inherited from class java.util.AbstractCollection
isEmpty
Methods inherited from interface java.util.Collection
isEmpty, toArray
Methods inherited from interface it.unimi.dsi.fastutil.ints.IntCollection
intIterator, intParallelStream, intSpliterator, intStream, parallelStream, stream
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Method Details
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contains
public boolean contains(int k) Description copied from class:AbstractIntCollection
Returnstrue
if this collection contains the specified element.- Specified by:
contains
in interfaceIntCollection
- Overrides:
contains
in classAbstractIntCollection
- See Also:
-
toArray
- Specified by:
toArray
in interfaceCollection<Integer>
- Overrides:
toArray
in classAbstractCollection<Integer>
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toArray
public <T> T[] toArray(T[] array) - Specified by:
toArray
in interfaceCollection<Integer>
- Overrides:
toArray
in classAbstractCollection<Integer>
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iterator
Description copied from interface:IntCollection
Returns a type-specific iterator on the elements of this collection.- Specified by:
iterator
in interfaceCollection<Integer>
- Specified by:
iterator
in interfaceIntCollection
- Specified by:
iterator
in interfaceIntIterable
- Specified by:
iterator
in interfaceIterable<Integer>
- Specified by:
iterator
in classAbstractIntCollection
- Returns:
- a type-specific iterator on the elements of this collection.
- See Also:
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spliterator
Description copied from interface:IntCollection
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.
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size
public int size()- Specified by:
size
in interfaceCollection<Integer>
- Specified by:
size
in classAbstractCollection<Integer>
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clear
public void clear()- Specified by:
clear
in interfaceCollection<Integer>
- Overrides:
clear
in classAbstractCollection<Integer>
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hashCode
public int hashCode()- Specified by:
hashCode
in interfaceCollection<Integer>
- Overrides:
hashCode
in classObject
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equals
- Specified by:
equals
in interfaceCollection<Integer>
- Overrides:
equals
in classObject
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forEach
Deprecated.Description copied from interface:IntIterable
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containsAll
Description copied from class:AbstractIntCollection
- Specified by:
containsAll
in interfaceCollection<Integer>
- Overrides:
containsAll
in classAbstractIntCollection
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addAll
Description copied from class:AbstractIntCollection
- Specified by:
addAll
in interfaceCollection<Integer>
- Overrides:
addAll
in classAbstractIntCollection
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removeAll
Description copied from class:AbstractIntCollection
- Specified by:
removeAll
in interfaceCollection<Integer>
- Overrides:
removeAll
in classAbstractIntCollection
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retainAll
Description copied from class:AbstractIntCollection
- Specified by:
retainAll
in interfaceCollection<Integer>
- Overrides:
retainAll
in classAbstractIntCollection
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removeIf
Deprecated.Description copied from interface:IntCollection
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toIntArray
public int[] toIntArray()Description copied from interface:IntCollection
Returns a primitive type array containing the items of this collection.- Specified by:
toIntArray
in interfaceIntCollection
- Overrides:
toIntArray
in classAbstractIntCollection
- Returns:
- a primitive type array containing the items of this collection.
- See Also:
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toIntArray
Deprecated.Description copied from class:AbstractIntCollection
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:
toIntArray
in interfaceIntCollection
- Overrides:
toIntArray
in classAbstractIntCollection
- 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:
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forEach
Description copied from interface:IntIterable
Performs the given action for each element of this type-specificIterable
until all elements have been processed or the action throws an exception.- Parameters:
action
- the action to be performed for each element.- See Also:
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containsAll
Description copied from interface:IntCollection
Checks whether this collection contains all elements from the given type-specific collection.- Specified by:
containsAll
in interfaceIntCollection
- Overrides:
containsAll
in classAbstractIntCollection
- Parameters:
c
- a type-specific collection.- Returns:
true
if this collection contains all elements of the argument.- See Also:
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addAll
Description copied from interface:IntCollection
Adds all elements of the given type-specific collection to this collection.- Specified by:
addAll
in interfaceIntCollection
- Overrides:
addAll
in classAbstractIntCollection
- Parameters:
c
- a type-specific collection.- Returns:
true
if this collection changed as a result of the call.- See Also:
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removeAll
Description copied from interface:IntCollection
Remove from this collection all elements in the given type-specific collection.- Specified by:
removeAll
in interfaceIntCollection
- Overrides:
removeAll
in classAbstractIntCollection
- Parameters:
c
- a type-specific collection.- Returns:
true
if this collection changed as a result of the call.- See Also:
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retainAll
Description copied from interface:IntCollection
Retains in this collection only elements from the given type-specific collection.- Specified by:
retainAll
in interfaceIntCollection
- Overrides:
retainAll
in classAbstractIntCollection
- Parameters:
c
- a type-specific collection.- Returns:
true
if this collection changed as a result of the call.- See Also:
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removeIf
Description copied from interface:IntCollection
Remove from this collection all elements which satisfy the given predicate.- Parameters:
filter
- a predicate which returnstrue
for elements to be removed.- Returns:
true
if any elements were removed.- See Also:
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