DoubleSets.Singleton (fastutil 7.0.13)

java.lang.Object
- java.util.AbstractCollection<java.lang.Double>
- - it.unimi.dsi.fastutil.doubles.AbstractDoubleCollection
  - - it.unimi.dsi.fastutil.doubles.AbstractDoubleSet
    - - it.unimi.dsi.fastutil.doubles.DoubleSets.Singleton

All Implemented Interfaces:

DoubleCollection, DoubleIterable, DoubleSet, java.io.Serializable, java.lang.Cloneable, java.lang.Iterable<java.lang.Double>, java.util.Collection<java.lang.Double>, java.util.Set<java.lang.Double>

Direct Known Subclasses:

DoubleSortedSets.Singleton

Enclosing class:

DoubleSets
```
public static class DoubleSets.Singleton
extends AbstractDoubleSet
implements java.io.Serializable, java.lang.Cloneable
```
An immutable class representing a type-specific singleton set.
This class may be useful to implement your own in case you subclass a type-specific set.

See Also:

Serialized Form

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`add(double k)`
`boolean`	`addAll(java.util.Collection<? extends java.lang.Double> c)` Adds all elements of the given collection to this collection.
`boolean`	`addAll(DoubleCollection c)` Adds all elements of the given type-specific collection to this collection.
`java.lang.Object`	`clone()`
`boolean`	`contains(double k)`
`DoubleListIterator`	`iterator()` Returns a type-specific iterator on the elements of this collection.
`boolean`	`removeAll(java.util.Collection<?> c)` Remove from this collection all elements in the given collection.
`boolean`	`removeAll(DoubleCollection c)` Remove from this collection all elements in the given type-specific collection.
`boolean`	`retainAll(java.util.Collection<?> c)` Retains in this collection only elements from the given collection.
`boolean`	`retainAll(DoubleCollection c)` Retains in this collection only elements from the given type-specific collection.
`int`	`size()`
`double[]`	`toDoubleArray()` Returns a primitive type array containing the items of this collection.

Methods inherited from class it.unimi.dsi.fastutil.doubles.AbstractDoubleSet
equals, hashCode, remove, remove

Methods inherited from class it.unimi.dsi.fastutil.doubles.AbstractDoubleCollection
add, contains, containsAll, containsAll, doubleIterator, isEmpty, rem, rem, toArray, toArray, toArray, toDoubleArray, toString

Methods inherited from class java.util.AbstractCollection
clear

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.doubles.DoubleCollection
containsAll, doubleIterator, rem, toArray, toArray, toDoubleArray

Methods inherited from interface java.util.Set
add, clear, contains, containsAll, isEmpty, spliterator, toArray, toArray

Methods inherited from interface java.util.Collection
parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable
forEach

- Method Detail
  - add
```
public boolean add(double k)
```
    Specified by:
    
    add in interface DoubleCollection
    
    Overrides:
    
    add in class AbstractDoubleCollection
    
    See Also:
    
    Collection.add(Object)
  - contains
```
public boolean contains(double k)
```
    Specified by:
    
    contains in interface DoubleCollection
    
    Overrides:
    
    contains in class AbstractDoubleCollection
    
    See Also:
    
    Collection.contains(Object)
  - addAll
```
public boolean addAll(java.util.Collection<? extends java.lang.Double> c)
```
    Description copied from class: AbstractDoubleCollection
    
    Adds all elements of the given collection to this collection.
    
    Specified by:
    
    addAll in interface java.util.Collection<java.lang.Double>
    
    Specified by:
    
    addAll in interface java.util.Set<java.lang.Double>
    
    Overrides:
    
    addAll in class AbstractDoubleCollection
    
    Parameters:
    
    c - a collection.
    
    Returns:
    
    true if this collection changed as a result of the call.
  - removeAll
```
public boolean removeAll(java.util.Collection<?> c)
```
    Description copied from class: AbstractDoubleCollection
    
    Remove from this collection all elements in the given collection. If the collection is an instance of this class, it uses faster iterators.
    
    Specified by:
    
    removeAll in interface java.util.Collection<java.lang.Double>
    
    Specified by:
    
    removeAll in interface java.util.Set<java.lang.Double>
    
    Overrides:
    
    removeAll in class AbstractDoubleCollection
    
    Parameters:
    
    c - a collection.
    
    Returns:
    
    true if this collection changed as a result of the call.
  - retainAll
```
public boolean retainAll(java.util.Collection<?> c)
```
    Description copied from class: AbstractDoubleCollection
    
    Retains in this collection only elements from the given collection.
    
    Specified by:
    
    retainAll in interface java.util.Collection<java.lang.Double>
    
    Specified by:
    
    retainAll in interface java.util.Set<java.lang.Double>
    
    Overrides:
    
    retainAll in class AbstractDoubleCollection
    
    Parameters:
    
    c - a collection.
    
    Returns:
    
    true if this collection changed as a result of the call.
  - 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()
  - addAll
```
public boolean addAll(DoubleCollection c)
```
    Description copied from class: AbstractDoubleCollection
    
    Adds all elements of the given type-specific collection to this collection.
    
    Specified by:
    
    addAll in interface DoubleCollection
    
    Overrides:
    
    addAll in class AbstractDoubleCollection
    
    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 class: AbstractDoubleCollection
    
    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 class: AbstractDoubleCollection
    
    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)
  - 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 DoubleSet
    
    Specified by:
    
    iterator in interface java.lang.Iterable<java.lang.Double>
    
    Specified by:
    
    iterator in interface java.util.Collection<java.lang.Double>
    
    Specified by:
    
    iterator in interface java.util.Set<java.lang.Double>
    
    Specified by:
    
    iterator in class AbstractDoubleSet
    
    Returns:
    
    a type-specific iterator on the elements of this collection.
  - size
```
public int size()
```
    Specified by:
    
    size in interface java.util.Collection<java.lang.Double>
    
    Specified by:
    
    size in interface java.util.Set<java.lang.Double>
    
    Specified by:
    
    size in class java.util.AbstractCollection<java.lang.Double>
  - clone
```
public java.lang.Object clone()
```
    Overrides:
    
    clone in class java.lang.Object

Class DoubleSets.Singleton

Method Summary

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

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

Methods inherited from class java.util.AbstractCollection

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Set

Methods inherited from interface java.util.Collection

Methods inherited from interface java.lang.Iterable

Method Detail

add

contains

addAll

removeAll

retainAll

toDoubleArray

addAll

removeAll

retainAll

iterator

size

clone