Package it.unimi.dsi.fastutil.doubles
Class DoubleCollections.EmptyCollection
- java.lang.Object
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- java.util.AbstractCollection<java.lang.Double>
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- it.unimi.dsi.fastutil.doubles.AbstractDoubleCollection
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- it.unimi.dsi.fastutil.doubles.DoubleCollections.EmptyCollection
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- All Implemented Interfaces:
DoubleCollection
,DoubleIterable
,java.lang.Iterable<java.lang.Double>
,java.util.Collection<java.lang.Double>
- Direct Known Subclasses:
DoubleBigLists.EmptyBigList
,DoubleLists.EmptyList
,DoubleSets.EmptySet
- Enclosing class:
- DoubleCollections
public abstract static class DoubleCollections.EmptyCollection extends AbstractDoubleCollection
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
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description boolean
addAll(DoubleCollection c)
Adds all elements of the given type-specific collection to this collection.boolean
addAll(java.util.Collection<? extends java.lang.Double> c)
void
clear()
boolean
contains(double k)
Returnstrue
if this collection contains the specified element.boolean
containsAll(DoubleCollection c)
Checks whether this collection contains all elements from the given type-specific collection.boolean
containsAll(java.util.Collection<?> c)
boolean
equals(java.lang.Object o)
void
forEach(java.util.function.Consumer<? super java.lang.Double> action)
Deprecated.void
forEach(java.util.function.DoubleConsumer 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()
DoubleBidirectionalIterator
iterator()
Returns a type-specific iterator on the elements of this collection.boolean
removeAll(DoubleCollection c)
Remove from this collection all elements in the given type-specific collection.boolean
removeAll(java.util.Collection<?> c)
boolean
removeIf(java.util.function.DoublePredicate filter)
Remove from this collection all elements which satisfy the given predicate.boolean
removeIf(java.util.function.Predicate<? super java.lang.Double> filter)
Deprecated.boolean
retainAll(DoubleCollection c)
Retains in this collection only elements from the given type-specific collection.boolean
retainAll(java.util.Collection<?> c)
int
size()
DoubleSpliterator
spliterator()
Returns a type-specific spliterator on the elements of this collection.java.lang.Object[]
toArray()
<T> T[]
toArray(T[] array)
double[]
toDoubleArray()
Returns a primitive type array containing the items of this collection.double[]
toDoubleArray(double[] a)
Deprecated.-
Methods inherited from class it.unimi.dsi.fastutil.doubles.AbstractDoubleCollection
add, add, contains, forEach, rem, remove, removeIf, toArray, toString
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Methods inherited from interface it.unimi.dsi.fastutil.doubles.DoubleCollection
doubleIterator, doubleParallelStream, doubleSpliterator, doubleStream, parallelStream, stream
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Method Detail
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contains
public boolean contains(double k)
Description copied from class:AbstractDoubleCollection
Returnstrue
if this collection contains the specified element.- Specified by:
contains
in interfaceDoubleCollection
- Overrides:
contains
in classAbstractDoubleCollection
- See Also:
Collection.contains(Object)
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toArray
public java.lang.Object[] toArray()
- Specified by:
toArray
in interfacejava.util.Collection<java.lang.Double>
- Overrides:
toArray
in classjava.util.AbstractCollection<java.lang.Double>
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toArray
public <T> T[] toArray(T[] array)
- Specified by:
toArray
in interfacejava.util.Collection<java.lang.Double>
- Overrides:
toArray
in classjava.util.AbstractCollection<java.lang.Double>
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iterator
public DoubleBidirectionalIterator iterator()
Description copied from interface:DoubleCollection
Returns a type-specific iterator on the elements of this collection.- Specified by:
iterator
in interfacejava.util.Collection<java.lang.Double>
- Specified by:
iterator
in interfaceDoubleCollection
- Specified by:
iterator
in interfaceDoubleIterable
- Specified by:
iterator
in interfacejava.lang.Iterable<java.lang.Double>
- Specified by:
iterator
in classAbstractDoubleCollection
- Returns:
- a type-specific iterator on the elements of this collection.
- See Also:
Iterable.iterator()
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spliterator
public DoubleSpliterator spliterator()
Description copied from interface:DoubleCollection
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 interfacejava.util.Collection<java.lang.Double>
- Specified by:
size
in classjava.util.AbstractCollection<java.lang.Double>
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clear
public void clear()
- Specified by:
clear
in interfacejava.util.Collection<java.lang.Double>
- Overrides:
clear
in classjava.util.AbstractCollection<java.lang.Double>
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hashCode
public int hashCode()
- Specified by:
hashCode
in interfacejava.util.Collection<java.lang.Double>
- Overrides:
hashCode
in classjava.lang.Object
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equals
public boolean equals(java.lang.Object o)
- Specified by:
equals
in interfacejava.util.Collection<java.lang.Double>
- Overrides:
equals
in classjava.lang.Object
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forEach
@Deprecated public void forEach(java.util.function.Consumer<? super java.lang.Double> action)
Deprecated.Description copied from interface:DoubleIterable
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containsAll
public boolean containsAll(java.util.Collection<?> c)
Description copied from class:AbstractDoubleCollection
- Specified by:
containsAll
in interfacejava.util.Collection<java.lang.Double>
- Overrides:
containsAll
in classAbstractDoubleCollection
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addAll
public boolean addAll(java.util.Collection<? extends java.lang.Double> c)
Description copied from class:AbstractDoubleCollection
- Specified by:
addAll
in interfacejava.util.Collection<java.lang.Double>
- Overrides:
addAll
in classAbstractDoubleCollection
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removeAll
public boolean removeAll(java.util.Collection<?> c)
Description copied from class:AbstractDoubleCollection
- Specified by:
removeAll
in interfacejava.util.Collection<java.lang.Double>
- Overrides:
removeAll
in classAbstractDoubleCollection
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retainAll
public boolean retainAll(java.util.Collection<?> c)
Description copied from class:AbstractDoubleCollection
- Specified by:
retainAll
in interfacejava.util.Collection<java.lang.Double>
- Overrides:
retainAll
in classAbstractDoubleCollection
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removeIf
@Deprecated public boolean removeIf(java.util.function.Predicate<? super java.lang.Double> filter)
Deprecated.Description copied from interface:DoubleCollection
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toDoubleArray
public double[] toDoubleArray()
Description copied from interface:DoubleCollection
Returns a primitive type array containing the items of this collection.- Specified by:
toDoubleArray
in interfaceDoubleCollection
- Overrides:
toDoubleArray
in classAbstractDoubleCollection
- Returns:
- a primitive type array containing the items of this collection.
- See Also:
Collection.toArray()
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toDoubleArray
@Deprecated public double[] toDoubleArray(double[] a)
Deprecated.Description copied from class:AbstractDoubleCollection
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:
toDoubleArray
in interfaceDoubleCollection
- Overrides:
toDoubleArray
in classAbstractDoubleCollection
- 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[])
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forEach
public void forEach(java.util.function.DoubleConsumer action)
Description copied from interface:DoubleIterable
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:
Iterable.forEach(java.util.function.Consumer)
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containsAll
public boolean containsAll(DoubleCollection c)
Description copied from interface:DoubleCollection
Checks whether this collection contains all elements from the given type-specific collection.- Specified by:
containsAll
in interfaceDoubleCollection
- Overrides:
containsAll
in classAbstractDoubleCollection
- Parameters:
c
- a type-specific collection.- Returns:
true
if this collection contains all elements of the argument.- See Also:
Collection.containsAll(Collection)
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addAll
public boolean addAll(DoubleCollection c)
Description copied from interface:DoubleCollection
Adds all elements of the given type-specific collection to this collection.- Specified by:
addAll
in interfaceDoubleCollection
- Overrides:
addAll
in classAbstractDoubleCollection
- Parameters:
c
- a type-specific collection.- Returns:
true
if this collection changed as a result of the call.- See Also:
Collection.addAll(Collection)
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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 interfaceDoubleCollection
- Overrides:
removeAll
in classAbstractDoubleCollection
- Parameters:
c
- a type-specific collection.- Returns:
true
if this collection changed as a result of the call.- See Also:
Collection.removeAll(Collection)
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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 interfaceDoubleCollection
- Overrides:
retainAll
in classAbstractDoubleCollection
- Parameters:
c
- a type-specific collection.- Returns:
true
if this collection changed as a result of the call.- See Also:
Collection.retainAll(Collection)
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removeIf
public boolean removeIf(java.util.function.DoublePredicate filter)
Description copied from interface:DoubleCollection
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:
Collection.removeIf(java.util.function.Predicate)
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