AbstractDoubleCollection (fastutil 6.5.7)

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

All Implemented Interfaces:

DoubleCollection, DoubleIterable, Iterable<Double>, Collection<Double>

Direct Known Subclasses:

AbstractDoubleBigList, AbstractDoubleList, AbstractDoubleSet, DoubleCollections.EmptyCollection, DoubleCollections.IterableCollection
```
public abstract class AbstractDoubleCollection
extends AbstractCollection<Double>
implements DoubleCollection
```
An abstract class providing basic methods for collections implementing a type-specific interface.
In particular, this class provide iterator(), add(), remove(Object) and contains(Object) methods that just call the type-specific counterpart.

Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`add(double k)`
`boolean`	`add(Double o)` Delegates to the corresponding type-specific method.
`boolean`	`addAll(Collection<? extends 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.
`boolean`	`contains(double k)`
`boolean`	`contains(Object o)` Delegates to the corresponding type-specific method.
`boolean`	`containsAll(Collection<?> c)` Checks whether this collection contains all elements from the given collection.
`boolean`	`containsAll(DoubleCollection c)` Checks whether this collection contains all elements from the given type-specific collection.
`DoubleIterator`	`doubleIterator()` Deprecated.
`boolean`	`isEmpty()`
`abstract DoubleIterator`	`iterator()` Returns a type-specific iterator on the elements of this collection.
`boolean`	`rem(double k)` Note that this method should be called `remove()`, but the clash with the similarly named index-based method in the `List` interface forces us to use a distinguished name.
`boolean`	`rem(Object o)` Delegates to the corresponding type-specific method.
`boolean`	`remove(Object ok)` Delegates to the type-specific `rem()` method.
`boolean`	`removeAll(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(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.
`Object[]`	`toArray()`
`double[]`	`toArray(double[] a)` Returns a primitive type array containing the items of this collection.
`<T> T[]`	`toArray(T[] a)` Returns an containing the items of this collection; the runtime type of the returned array is that of the specified array.
`double[]`	`toDoubleArray()` Returns a primitive type array containing the items of this collection.
`double[]`	`toDoubleArray(double[] a)` Returns a primitive type array containing the items of this collection.
`String`	`toString()`

Methods inherited from class java.util.AbstractCollection
clear, size

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

Methods inherited from interface java.util.Collection
clear, equals, hashCode, size

- Method Detail
  - toArray
```
public double[] toArray(double[] a)
```
    Description copied from interface: DoubleCollection
    
    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:
    
    toArray in interface DoubleCollection
    
    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[])
  - 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
    
    Returns:
    a primitive type array containing the items of this collection.
    See Also:
    Collection.toArray()
  - toDoubleArray
```
public double[] toDoubleArray(double[] a)
```
    Description copied from interface: DoubleCollection
    
    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 interface DoubleCollection
    
    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[])
  - addAll
```
public boolean addAll(DoubleCollection c)
```
    Adds all elements of the given type-specific collection to this collection.
    
    Specified by:
    
    addAll in interface DoubleCollection
    
    Parameters:
    c - a type-specific collection.
    
    Returns:
    true if this collection changed as a result of the call.
    See Also:
    Collection.addAll(Collection)
  - containsAll
```
public boolean containsAll(DoubleCollection c)
```
    Checks whether this collection contains all elements from the given type-specific collection.
    
    Specified by:
    
    containsAll in interface DoubleCollection
    
    Parameters:
    c - a type-specific collection.
    
    Returns:
    true if this collection contains all elements of the argument.
    See Also:
    Collection.containsAll(Collection)
  - retainAll
```
public boolean retainAll(DoubleCollection c)
```
    Retains in this collection only elements from the given type-specific collection.
    
    Specified by:
    
    retainAll in interface DoubleCollection
    
    Parameters:
    c - a type-specific collection.
    
    Returns:
    true if this collection changed as a result of the call.
    See Also:
    Collection.retainAll(Collection)
  - removeAll
```
public boolean removeAll(DoubleCollection c)
```
    Remove from this collection all elements in the given type-specific collection.
    
    Specified by:
    
    removeAll in interface DoubleCollection
    
    Parameters:
    c - a type-specific collection.
    
    Returns:
    true if this collection changed as a result of the call.
    See Also:
    Collection.removeAll(Collection)
  - toArray
```
public Object[] toArray()
```
    Specified by:
    
    toArray in interface Collection<Double>
    
    Overrides:
    
    toArray in class AbstractCollection<Double>
  - toArray
```
public <T> T[] toArray(T[] a)
```
    Description copied from interface: DoubleCollection
    
    Returns an containing the items of this collection; the runtime type of the returned array is that of the specified array.
    Warning: 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:
    
    toArray in interface DoubleCollection
    
    Specified by:
    
    toArray in interface Collection<Double>
    
    Overrides:
    
    toArray in class AbstractCollection<Double>
    
    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[])
  - addAll
```
public boolean addAll(Collection<? extends Double> c)
```
    Adds all elements of the given collection to this collection.
    
    Specified by:
    
    addAll in interface Collection<Double>
    
    Overrides:
    
    addAll in class AbstractCollection<Double>
    
    Parameters:
    c - a collection.
    
    Returns:
    true if this collection changed as a result of the call.
  - add
```
public boolean add(double k)
```
    Specified by:
    
    add in interface DoubleCollection
    
    See Also:
    Collection.add(Object)
  - doubleIterator
```
@Deprecated
public DoubleIterator doubleIterator()
```
    Deprecated.
    
    Delegates to the new covariantly stronger generic method.
    
    Specified by:
    
    doubleIterator in interface DoubleCollection
    
    See Also:
    DoubleCollection.iterator()
  - iterator
```
public abstract DoubleIterator 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 Iterable<Double>
    
    Specified by:
    
    iterator in interface Collection<Double>
    
    Specified by:
    
    iterator in class AbstractCollection<Double>
    
    Returns:
    a type-specific iterator on the elements of this collection.
  - remove
```
public boolean remove(Object ok)
```
    Delegates to the type-specific rem() method.
    
    Specified by:
    
    remove in interface Collection<Double>
    
    Overrides:
    
    remove in class AbstractCollection<Double>
  - add
```
public boolean add(Double o)
```
    Delegates to the corresponding type-specific method.
    
    Specified by:
    
    add in interface Collection<Double>
    
    Overrides:
    
    add in class AbstractCollection<Double>
  - rem
```
public boolean rem(Object o)
```
    Delegates to the corresponding type-specific method.
  - contains
```
public boolean contains(Object o)
```
    Delegates to the corresponding type-specific method.
    
    Specified by:
    
    contains in interface Collection<Double>
    
    Overrides:
    
    contains in class AbstractCollection<Double>
  - contains
```
public boolean contains(double k)
```
    Specified by:
    
    contains in interface DoubleCollection
    
    See Also:
    Collection.contains(Object)
  - rem
```
public boolean rem(double k)
```
    Description copied from interface: DoubleCollection
    
    Note that this method should be called remove(), but the clash with the similarly named index-based method in the List interface forces us to use a distinguished name. For simplicity, the set interfaces reinstates remove().
    
    Specified by:
    
    rem in interface DoubleCollection
    
    See Also:
    Collection.remove(Object)
  - containsAll
```
public boolean containsAll(Collection<?> c)
```
    Checks whether this collection contains all elements from the given collection.
    
    Specified by:
    
    containsAll in interface Collection<Double>
    
    Overrides:
    
    containsAll in class AbstractCollection<Double>
    
    Parameters:
    c - a collection.
    
    Returns:
    true if this collection contains all elements of the argument.
  - retainAll
```
public boolean retainAll(Collection<?> c)
```
    Retains in this collection only elements from the given collection.
    
    Specified by:
    
    retainAll in interface Collection<Double>
    
    Overrides:
    
    retainAll in class AbstractCollection<Double>
    
    Parameters:
    c - a collection.
    
    Returns:
    true if this collection changed as a result of the call.
  - removeAll
```
public boolean removeAll(Collection<?> c)
```
    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 Collection<Double>
    
    Overrides:
    
    removeAll in class AbstractCollection<Double>
    
    Parameters:
    c - a collection.
    
    Returns:
    true if this collection changed as a result of the call.
  - isEmpty
```
public boolean isEmpty()
```
    Specified by:
    
    isEmpty in interface Collection<Double>
    
    Overrides:
    
    isEmpty in class AbstractCollection<Double>
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class AbstractCollection<Double>

Class AbstractDoubleCollection

Method Summary

Methods inherited from class java.util.AbstractCollection

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.Collection

Method Detail

toArray

toDoubleArray

toDoubleArray

addAll

containsAll

retainAll

removeAll

toArray

toArray

addAll

add

doubleIterator

iterator

remove

add

rem

contains

contains

rem

containsAll

retainAll

removeAll

isEmpty

toString