Package it.unimi.dsi.fastutil.shorts

Class Short2ReferenceMaps.EmptyMap<V>

java.lang.Object

it.unimi.dsi.fastutil.shorts.AbstractShort2ReferenceFunction<V>

it.unimi.dsi.fastutil.shorts.Short2ReferenceFunctions.EmptyFunction<V>

it.unimi.dsi.fastutil.shorts.Short2ReferenceMaps.EmptyMap<V>

All Implemented Interfaces:

Function<Short,V>, Short2ReferenceFunction<V>, Short2ReferenceMap<V>, Serializable, Cloneable, Function<Short,V>, IntFunction<V>, Map<Short,V>

Direct Known Subclasses:

Short2ReferenceSortedMaps.EmptySortedMap

Enclosing class:

Short2ReferenceMaps

public static class Short2ReferenceMaps.EmptyMap<V>
extends Short2ReferenceFunctions.EmptyFunction<V>
implements Short2ReferenceMap<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.shorts.Short2ReferenceMap

Short2ReferenceMap.Entry<V>, Short2ReferenceMap.FastEntrySet<V>

Method Summary

Modifier and Type	Method	Description
Object	clone()
boolean	containsValue(Object v)
boolean	equals(Object o)
void	forEach(BiConsumer<? super Short,? super V> consumer)
V	getOrDefault(short key, V defaultValue)	Returns the value associated by this function to the specified key, or give the specified value if not present.
V	getOrDefault(Object key, V defaultValue)	Deprecated.
int	hashCode()
boolean	isEmpty()
ShortSet	keySet()
void	putAll(Map<? extends Short,? extends V> m)
ObjectSet<Short2ReferenceMap.Entry<V>>	short2ReferenceEntrySet()	Returns a type-specific set view of the mappings contained in this map.
String	toString()
ReferenceCollection<V>	values()

Methods inherited from class it.unimi.dsi.fastutil.shorts.Short2ReferenceFunctions.EmptyFunction

clear, containsKey, defaultReturnValue, defaultReturnValue, get, size

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

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

apply

Methods inherited from interface java.util.function.Function

andThen

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, merge, putIfAbsent, remove, replace, replace, replaceAll

Methods inherited from interface it.unimi.dsi.fastutil.shorts.Short2ReferenceFunction

andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, apply, compose, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, get, put, remove

Methods inherited from interface it.unimi.dsi.fastutil.shorts.Short2ReferenceMap

clear, compute, computeIfAbsent, computeIfAbsent, computeIfAbsentPartial, computeIfPresent, containsKey, containsKey, defaultReturnValue, defaultReturnValue, entrySet, get, merge, put, putIfAbsent, remove, remove, replace, replace, size

Method Details

containsValue

public boolean containsValue(Object v)

Specified by:

containsValue in interface Map<Short,V>

getOrDefault

@Deprecated
public V getOrDefault(Object key,
 V defaultValue)

Deprecated.

Description copied from interface: Short2ReferenceMap

Returns the value associated by this function to the specified key, or give the specified value if not present.

This default implementation just delegates to the corresponding Map method.

Specified by:

getOrDefault in interface Function<Short,V>

Specified by:

getOrDefault in interface Map<Short,V>

Specified by:

getOrDefault in interface Short2ReferenceFunction<V>

Specified by:

getOrDefault in interface Short2ReferenceMap<V>

Parameters:

key - the key.

defaultValue - the default value to return if not present.

Returns:

the corresponding value, or defaultValue if no value was present for the given key.

See Also:

• Map.getOrDefault(Object, Object)

getOrDefault

public V getOrDefault(short key,
 V defaultValue)

Description copied from interface: Short2ReferenceFunction

Returns the value associated by this function to the specified key, or give the specified value if not present.

Specified by:

getOrDefault in interface Short2ReferenceFunction<V>

Specified by:

getOrDefault in interface Short2ReferenceMap<V>

Overrides:

getOrDefault in class Short2ReferenceFunctions.EmptyFunction<V>

Parameters:

key - the key.

defaultValue - the value to return if not present.

Returns:

the corresponding value, or defaultValue if no value was present for the given key.

See Also:

• Function.getOrDefault(Object, Object)

putAll

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

Specified by:

putAll in interface Map<Short,V>

short2ReferenceEntrySet

public ObjectSet<Short2ReferenceMap.Entry<V>> short2ReferenceEntrySet()

Description copied from interface: Short2ReferenceMap

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:

short2ReferenceEntrySet in interface Short2ReferenceMap<V>

Returns:

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

See Also:

• Map.entrySet()

keySet

public ShortSet keySet()

Description copied from interface: Short2ReferenceMap

Specified by:

keySet in interface Map<Short,V>

Specified by:

keySet in interface Short2ReferenceMap<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: Short2ReferenceMap

Specified by:

values in interface Map<Short,V>

Specified by:

values in interface Short2ReferenceMap<V>

Returns:

a set view of the values contained in this map.

See Also:

• Map.values()

forEach

public void forEach(BiConsumer<? super Short,? super V> consumer)

Specified by:

forEach in interface Map<Short,V>

Specified by:

forEach in interface Short2ReferenceMap<V>

clone

public Object clone()

Overrides:

clone in class Short2ReferenceFunctions.EmptyFunction<V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<Short,V>

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<Short,V>

Overrides:

hashCode in class Short2ReferenceFunctions.EmptyFunction<V>

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<Short,V>

Overrides:

equals in class Short2ReferenceFunctions.EmptyFunction<V>

toString

public String toString()

Overrides:

toString in class Short2ReferenceFunctions.EmptyFunction<V>