LongSets.EmptySet (fastutil 8.5.15)

java.lang.Object
- java.util.AbstractCollection<java.lang.Long>
- - it.unimi.dsi.fastutil.longs.AbstractLongCollection
  - - it.unimi.dsi.fastutil.longs.LongCollections.EmptyCollection
    - - it.unimi.dsi.fastutil.longs.LongSets.EmptySet

All Implemented Interfaces:

LongCollection, LongIterable, LongSet, java.io.Serializable, java.lang.Cloneable, java.lang.Iterable<java.lang.Long>, java.util.Collection<java.lang.Long>, java.util.Set<java.lang.Long>

Direct Known Subclasses:

LongSortedSets.EmptySet

Enclosing class:

LongSets
```
public static class LongSets.EmptySet
extends LongCollections.EmptyCollection
implements LongSet, java.io.Serializable, java.lang.Cloneable
```
An immutable class representing the empty set and implementing a type-specific set interface.
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 Deprecated Methods
Modifier and Type	Method	Description
`java.lang.Object`	`clone()`
`boolean`	`equals(java.lang.Object o)`
`boolean`	`rem(long k)`	Deprecated.
`boolean`	`remove(long ok)`	Removes an element from this set.

Methods inherited from class it.unimi.dsi.fastutil.longs.LongCollections.EmptyCollection
addAll, addAll, clear, contains, containsAll, containsAll, forEach, forEach, hashCode, iterator, removeAll, removeAll, removeIf, removeIf, retainAll, retainAll, size, spliterator, toArray, toArray, toLongArray, toLongArray

Methods inherited from class it.unimi.dsi.fastutil.longs.AbstractLongCollection
add, add, contains, forEach, remove, removeIf, toArray, toString

Methods inherited from class java.util.AbstractCollection
isEmpty

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

Methods inherited from interface java.util.Collection
toArray

Methods inherited from interface it.unimi.dsi.fastutil.longs.LongCollection
add, addAll, contains, containsAll, longIterator, longParallelStream, longSpliterator, longStream, parallelStream, removeAll, removeIf, removeIf, removeIf, retainAll, stream, toArray, toLongArray, toLongArray

Methods inherited from interface it.unimi.dsi.fastutil.longs.LongIterable
forEach, forEach, forEach

Methods inherited from interface it.unimi.dsi.fastutil.longs.LongSet
add, contains, iterator, remove, spliterator

Methods inherited from interface java.util.Set
addAll, clear, containsAll, hashCode, isEmpty, removeAll, retainAll, size, toArray, toArray

- Method Detail
  - remove
```
public boolean remove(long ok)
```
    Description copied from interface: LongSet
    
    Removes an element from this set.
    
    Specified by:
    
    remove in interface LongSet
    
    See Also:
    
    Collection.remove(Object)
  - clone
```
public java.lang.Object clone()
```
  - equals
```
public boolean equals(java.lang.Object o)
```
    Specified by:
    
    equals in interface java.util.Collection<java.lang.Long>
    
    Specified by:
    
    equals in interface java.util.Set<java.lang.Long>
    
    Overrides:
    
    equals in class LongCollections.EmptyCollection
  - rem
```
@Deprecated
public boolean rem(long k)
```
    Deprecated.
    
    Description copied from class: AbstractLongCollection
    
    Removes a single instance of the specified element from this collection, if it is present (optional operation).
    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 LongCollection
    
    Specified by:
    
    rem in interface LongSet
    
    Overrides:
    
    rem in class AbstractLongCollection
    
    See Also:
    
    Collection.remove(Object)