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java.lang.Objectjava.util.AbstractCollection<java.lang.Long>
it.unimi.dsi.fastutil.longs.AbstractLongCollection
it.unimi.dsi.fastutil.longs.LongCollections.EmptyCollection
public abstract static class LongCollections.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(long k)
|
boolean |
addAll(LongCollection c)
Adds all elements of the given type-specific collection to this collection. |
void |
clear()
|
boolean |
contains(long k)
|
boolean |
containsAll(LongCollection c)
Checks whether this collection contains all elements from the given type-specific collection. |
boolean |
equals(java.lang.Object o)
|
int |
hashCode()
|
LongBidirectionalIterator |
iterator()
Returns a type-specific iterator on the elements of this collection. |
boolean |
rem(long 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(LongCollection c)
Remove from this collection all elements in the given type-specific collection. |
boolean |
retainAll(LongCollection c)
Retains in this collection only elements from the given type-specific collection. |
int |
size()
|
java.lang.Object[] |
toArray()
|
long[] |
toLongArray()
Returns a primitive type array containing the items of this collection. |
long[] |
toLongArray(long[] a)
Returns a primitive type array containing the items of this collection. |
Methods inherited from class it.unimi.dsi.fastutil.longs.AbstractLongCollection |
---|
add, addAll, contains, containsAll, isEmpty, longIterator, 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(long k)
add
in interface LongCollection
add
in class AbstractLongCollection
Collection.add(Object)
public boolean contains(long k)
contains
in interface LongCollection
contains
in class AbstractLongCollection
Collection.contains(Object)
public java.lang.Object[] toArray()
toArray
in interface java.util.Collection<java.lang.Long>
toArray
in class AbstractLongCollection
public long[] toLongArray(long[] a)
LongCollection
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.
toLongArray
in interface LongCollection
toLongArray
in class AbstractLongCollection
a
- if this array is big enough, it will be used to store this collection.
Collection.toArray(Object[])
public long[] toLongArray()
LongCollection
toLongArray
in interface LongCollection
toLongArray
in class AbstractLongCollection
Collection.toArray()
public boolean rem(long k)
LongCollection
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 LongCollection
rem
in class AbstractLongCollection
Collection.remove(Object)
public boolean addAll(LongCollection c)
AbstractLongCollection
addAll
in interface LongCollection
addAll
in class AbstractLongCollection
c
- a type-specific collection.
true
if this collection changed as a result of the call.Collection.addAll(Collection)
public boolean removeAll(LongCollection c)
AbstractLongCollection
removeAll
in interface LongCollection
removeAll
in class AbstractLongCollection
c
- a type-specific collection.
true
if this collection changed as a result of the call.Collection.removeAll(Collection)
public boolean retainAll(LongCollection c)
AbstractLongCollection
retainAll
in interface LongCollection
retainAll
in class AbstractLongCollection
c
- a type-specific collection.
true
if this collection changed as a result of the call.Collection.retainAll(Collection)
public boolean containsAll(LongCollection c)
AbstractLongCollection
containsAll
in interface LongCollection
containsAll
in class AbstractLongCollection
c
- a type-specific collection.
true
if this collection contains all elements of the argument.Collection.containsAll(Collection)
public LongBidirectionalIterator iterator()
LongCollection
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 LongCollection
iterator
in interface LongIterable
iterator
in interface java.lang.Iterable<java.lang.Long>
iterator
in interface java.util.Collection<java.lang.Long>
iterator
in class AbstractLongCollection
public int size()
size
in interface java.util.Collection<java.lang.Long>
size
in class java.util.AbstractCollection<java.lang.Long>
public void clear()
clear
in interface java.util.Collection<java.lang.Long>
clear
in class java.util.AbstractCollection<java.lang.Long>
public int hashCode()
hashCode
in interface java.util.Collection<java.lang.Long>
hashCode
in class java.lang.Object
public boolean equals(java.lang.Object o)
equals
in interface java.util.Collection<java.lang.Long>
equals
in class java.lang.Object
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