it.unimi.dsi.fastutil.ints

Class Int2ReferenceMaps.EmptyMap<V>

java.lang.Object

it.unimi.dsi.fastutil.ints.AbstractInt2ReferenceFunction<V>

it.unimi.dsi.fastutil.ints.Int2ReferenceFunctions.EmptyFunction<V>

it.unimi.dsi.fastutil.ints.Int2ReferenceMaps.EmptyMap<V>

All Implemented Interfaces:

Function<Integer,V>, Int2ReferenceFunction<V>, Int2ReferenceMap<V>, Serializable, Cloneable, Map<Integer,V>

Direct Known Subclasses:

Int2ReferenceSortedMaps.EmptySortedMap

Enclosing class:

Int2ReferenceMaps

public static class Int2ReferenceMaps.EmptyMap<V>
extends Int2ReferenceFunctions.EmptyFunction<V>
implements Int2ReferenceMap<V>, Serializable, Cloneable

An immutable class representing an empty type-specific map.

This class may be useful to implement your own in case you subclass a type-specific map.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.ints.Int2ReferenceMap

Int2ReferenceMap.Entry<V>, Int2ReferenceMap.FastEntrySet<V>

Field Summary

Fields

Modifier and Type	Field and Description
static long	serialVersionUID

Fields inherited from class it.unimi.dsi.fastutil.ints.AbstractInt2ReferenceFunction

defRetValue

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Int2ReferenceMaps.EmptyMap()

Method Summary

Methods

Modifier and Type	Method and Description
Object	clone()
boolean	containsValue(Object v)
ObjectSet<Map.Entry<Integer,V>>	entrySet() Returns a set view of the mappings contained in this map.
boolean	equals(Object o)
int	hashCode()
ObjectSet<Int2ReferenceMap.Entry<V>>	int2ReferenceEntrySet() Returns a type-specific set view of the mappings contained in this map.
boolean	isEmpty()
IntSet	keySet() Returns a set view of the keys contained in this map.
void	putAll(Map<? extends Integer,? extends V> m)
String	toString()
ReferenceCollection<V>	values() Returns a set view of the values contained in this map.

Methods inherited from class it.unimi.dsi.fastutil.ints.Int2ReferenceFunctions.EmptyFunction

clear, containsKey, defaultReturnValue, defaultReturnValue, get, get, size

Methods inherited from class it.unimi.dsi.fastutil.ints.AbstractInt2ReferenceFunction

containsKey, put, put, remove, remove

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.ints.Int2ReferenceFunction

containsKey, defaultReturnValue, defaultReturnValue, get, put, remove

Methods inherited from interface it.unimi.dsi.fastutil.Function

clear, containsKey, get, put, remove, size

Methods inherited from interface java.util.Map

clear, containsKey, get, put, remove, size

Field Detail

serialVersionUID

public static final long serialVersionUID

See Also:

Constant Field Values

Constructor Detail

Int2ReferenceMaps.EmptyMap

protected Int2ReferenceMaps.EmptyMap()

Method Detail

containsValue

public boolean containsValue(Object v)

Specified by:

containsValue in interface Map<Integer,V>

putAll

public void putAll(Map<? extends Integer,? extends V> m)

Specified by:

putAll in interface Map<Integer,V>

int2ReferenceEntrySet

public ObjectSet<Int2ReferenceMap.Entry<V>> int2ReferenceEntrySet()

Description copied from interface: Int2ReferenceMap

Returns a type-specific set view of the mappings contained in this map.

This method is necessary because there is no inheritance along type parameters: it is thus impossible to strengthen Int2ReferenceMap.entrySet() so that it returns an ObjectSet of objects of type Map.Entry (the latter makes it possible to access keys and values with type-specific methods).

Specified by:

int2ReferenceEntrySet in interface Int2ReferenceMap<V>

Returns:

a type-specific set view of the mappings contained in this map.

See Also:

Int2ReferenceMap.entrySet()

keySet

public IntSet keySet()

Description copied from interface: Int2ReferenceMap

Returns a set view of the keys contained in this map.

Note that this specification strengthens the one given in Map.keySet().

Specified by:

keySet in interface Int2ReferenceMap<V>

Specified by:

keySet in interface Map<Integer,V>

Returns:

a set view of the keys contained in this map.

See Also:

Map.keySet()

values

public ReferenceCollection<V> values()

Description copied from interface: Int2ReferenceMap

Returns a set view of the values contained in this map.

Note that this specification strengthens the one given in Map.values().

Specified by:

values in interface Int2ReferenceMap<V>

Specified by:

values in interface Map<Integer,V>

Returns:

a set view of the values contained in this map.

See Also:

Map.values()

clone

public Object clone()

Overrides:

clone in class Int2ReferenceFunctions.EmptyFunction<V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<Integer,V>

entrySet

public ObjectSet<Map.Entry<Integer,V>> entrySet()

Description copied from interface: Int2ReferenceMap

Returns a set view of the mappings contained in this map.

Note that this specification strengthens the one given in Map.entrySet().

Specified by:

entrySet in interface Int2ReferenceMap<V>

Specified by:

entrySet in interface Map<Integer,V>

Returns:

a set view of the mappings contained in this map.

See Also:

Map.entrySet()

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<Integer,V>

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<Integer,V>

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object