it.unimi.dsi.fastutil.objects

Class Reference2ShortMaps.EmptyMap<K>

java.lang.Object

it.unimi.dsi.fastutil.objects.AbstractReference2ShortFunction<K>

it.unimi.dsi.fastutil.objects.Reference2ShortFunctions.EmptyFunction<K>

it.unimi.dsi.fastutil.objects.Reference2ShortMaps.EmptyMap<K>

All Implemented Interfaces:

Reference2ShortFunction<K>, Reference2ShortMap<K>, Serializable, Cloneable, Function<K,Short>, ToIntFunction<K>, Map<K,Short>

Direct Known Subclasses:

Reference2ShortSortedMaps.EmptySortedMap

Enclosing class:

Reference2ShortMaps

public static class Reference2ShortMaps.EmptyMap<K>
extends Reference2ShortFunctions.EmptyFunction<K>
implements Reference2ShortMap<K>, 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.objects.Reference2ShortMap

Reference2ShortMap.Entry<K>, Reference2ShortMap.FastEntrySet<K>

Field Summary

Fields inherited from class it.unimi.dsi.fastutil.objects.AbstractReference2ShortFunction

defRetValue

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	EmptyMap()

Method Summary

Modifier and Type	Method and Description
Object	clone()
boolean	containsValue(Object ov) Deprecated. Please use the corresponding type-specific method instead.
boolean	containsValue(short v) Returns true if this map maps one or more keys to the specified value.
boolean	equals(Object o)
int	hashCode()
boolean	isEmpty()
ReferenceSet<K>	keySet()
void	putAll(Map<? extends K,? extends Short> m)
ObjectSet<Reference2ShortMap.Entry<K>>	reference2ShortEntrySet() Returns a type-specific set view of the mappings contained in this map.
String	toString()
ShortCollection	values()

Methods inherited from class it.unimi.dsi.fastutil.objects.Reference2ShortFunctions.EmptyFunction

clear, containsKey, defaultReturnValue, defaultReturnValue, getShort, size

Methods inherited from class java.lang.Object

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

Methods inherited from interface it.unimi.dsi.fastutil.objects.Reference2ShortMap

clear, computeShort, computeShortIfAbsent, computeShortIfAbsentPartial, computeShortIfPresent, containsKey, defaultReturnValue, defaultReturnValue, entrySet, get, getOrDefault, getOrDefault, merge, mergeShort, put, putIfAbsent, putIfAbsent, remove, remove, remove, replace, replace, replace, replace, size

Methods inherited from interface it.unimi.dsi.fastutil.objects.Reference2ShortFunction

applyAsInt, getShort, put, removeShort

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

apply

Methods inherited from interface java.util.function.Function

andThen, compose, identity

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, replaceAll

Constructor Detail

EmptyMap

protected EmptyMap()

Method Detail

containsValue

public boolean containsValue(short v)

Description copied from interface: Reference2ShortMap

Returns true if this map maps one or more keys to the specified value.

Specified by:

containsValue in interface Reference2ShortMap<K>

See Also:

Map.containsValue(Object)

containsValue

@Deprecated
public boolean containsValue(Object ov)

Deprecated. Please use the corresponding type-specific method instead.

Specified by:

containsValue in interface Reference2ShortMap<K>

Specified by:

containsValue in interface Map<K,Short>

putAll

public void putAll(Map<? extends K,? extends Short> m)

Specified by:

putAll in interface Map<K,Short>

reference2ShortEntrySet

public ObjectSet<Reference2ShortMap.Entry<K>> reference2ShortEntrySet()

Description copied from interface: Reference2ShortMap

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 Map.entrySet() so that it returns an ObjectSet of type-specific entries (the latter makes it possible to access keys and values with type-specific methods).

Specified by:

reference2ShortEntrySet in interface Reference2ShortMap<K>

Returns:

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

See Also:

Map.entrySet()

keySet

public ReferenceSet<K> keySet()

Description copied from interface: Reference2ShortMap

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

Specified by:

keySet in interface Reference2ShortMap<K>

Specified by:

keySet in interface Map<K,Short>

Returns:

a set view of the keys contained in this map.

See Also:

Map.keySet()

values

public ShortCollection values()

Description copied from interface: Reference2ShortMap

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

Specified by:

values in interface Reference2ShortMap<K>

Specified by:

values in interface Map<K,Short>

Returns:

a set view of the values contained in this map.

See Also:

Map.values()

clone

public Object clone()

Overrides:

clone in class Reference2ShortFunctions.EmptyFunction<K>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<K,Short>

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<K,Short>

Overrides:

hashCode in class Reference2ShortFunctions.EmptyFunction<K>

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<K,Short>

Overrides:

equals in class Reference2ShortFunctions.EmptyFunction<K>

toString

public String toString()

Overrides:

toString in class Reference2ShortFunctions.EmptyFunction<K>