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java.lang.Objectjava.util.AbstractCollection<Double>
it.unimi.dsi.fastutil.doubles.AbstractDoubleCollection
it.unimi.dsi.fastutil.doubles.DoubleCollections.EmptyCollection
public abstract static class DoubleCollections.EmptyCollection
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 | |
---|---|
boolean |
add(double k)
|
boolean |
addAll(DoubleCollection c)
Adds all elements of the given type-specific collection to this collection. |
void |
clear()
|
boolean |
contains(double k)
|
boolean |
containsAll(DoubleCollection c)
Checks whether this collection contains all elements from the given type-specific collection. |
boolean |
equals(Object o)
|
int |
hashCode()
|
DoubleBidirectionalIterator |
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 |
removeAll(DoubleCollection c)
Remove from this collection all elements in the given type-specific collection. |
boolean |
retainAll(DoubleCollection c)
Retains in this collection only elements from the given type-specific collection. |
int |
size()
|
Object[] |
toArray()
|
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. |
Methods inherited from class it.unimi.dsi.fastutil.doubles.AbstractDoubleCollection |
---|
add, addAll, contains, containsAll, doubleIterator, isEmpty, rem, remove, removeAll, retainAll, toArray, toArray, toString |
Methods inherited from class java.lang.Object |
---|
getClass, notify, notifyAll, wait, wait, wait |
Method Detail |
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public boolean add(double k)
add
in interface DoubleCollection
add
in class AbstractDoubleCollection
Collection.add(Object)
public boolean contains(double k)
contains
in interface DoubleCollection
contains
in class AbstractDoubleCollection
Collection.contains(Object)
public Object[] toArray()
toArray
in interface Collection<Double>
toArray
in class AbstractDoubleCollection
public double[] toDoubleArray(double[] a)
DoubleCollection
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.
toDoubleArray
in interface DoubleCollection
toDoubleArray
in class AbstractDoubleCollection
a
- if this array is big enough, it will be used to store this collection.
Collection.toArray(Object[])
public double[] toDoubleArray()
DoubleCollection
toDoubleArray
in interface DoubleCollection
toDoubleArray
in class AbstractDoubleCollection
Collection.toArray()
public boolean rem(double k)
DoubleCollection
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()
.
rem
in interface DoubleCollection
rem
in class AbstractDoubleCollection
Collection.remove(Object)
public boolean addAll(DoubleCollection c)
AbstractDoubleCollection
addAll
in interface DoubleCollection
addAll
in class AbstractDoubleCollection
c
- a type-specific collection.
true
if this collection changed as a result of the call.Collection.addAll(Collection)
public boolean removeAll(DoubleCollection c)
AbstractDoubleCollection
removeAll
in interface DoubleCollection
removeAll
in class AbstractDoubleCollection
c
- a type-specific collection.
true
if this collection changed as a result of the call.Collection.removeAll(Collection)
public boolean retainAll(DoubleCollection c)
AbstractDoubleCollection
retainAll
in interface DoubleCollection
retainAll
in class AbstractDoubleCollection
c
- a type-specific collection.
true
if this collection changed as a result of the call.Collection.retainAll(Collection)
public boolean containsAll(DoubleCollection c)
AbstractDoubleCollection
containsAll
in interface DoubleCollection
containsAll
in class AbstractDoubleCollection
c
- a type-specific collection.
true
if this collection contains all elements of the argument.Collection.containsAll(Collection)
public DoubleBidirectionalIterator iterator()
DoubleCollection
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
.
iterator
in interface DoubleCollection
iterator
in interface DoubleIterable
iterator
in interface Iterable<Double>
iterator
in interface Collection<Double>
iterator
in class AbstractDoubleCollection
public int size()
size
in interface Collection<Double>
size
in class AbstractCollection<Double>
public void clear()
clear
in interface Collection<Double>
clear
in class AbstractCollection<Double>
public int hashCode()
hashCode
in interface Collection<Double>
hashCode
in class Object
public boolean equals(Object o)
equals
in interface Collection<Double>
equals
in class Object
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