Class Byte2ObjectMaps.EmptyMap<V>

java.lang.Object

it.unimi.dsi.fastutil.bytes.AbstractByte2ObjectFunction<V>

it.unimi.dsi.fastutil.bytes.Byte2ObjectFunctions.EmptyFunction<V>

it.unimi.dsi.fastutil.bytes.Byte2ObjectMaps.EmptyMap<V>

All Implemented Interfaces:

Byte2ObjectFunction<V>, Byte2ObjectMap<V>, Function<Byte,V>, Serializable, Cloneable, Function<Byte,V>, IntFunction<V>, Map<Byte,V>

Direct Known Subclasses:

Byte2ObjectSortedMaps.EmptySortedMap

Enclosing class:

Byte2ObjectMaps

public static class Byte2ObjectMaps.EmptyMap<V>
extends Byte2ObjectFunctions.EmptyFunction<V>
implements Byte2ObjectMap<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.bytes.Byte2ObjectMap

Byte2ObjectMap.Entry<V>, Byte2ObjectMap.FastEntrySet<V>

Method Summary

Modifier and Type	Method	Description
ObjectSet<Byte2ObjectMap.Entry<V>>	byte2ObjectEntrySet()	Returns a type-specific set view of the mappings contained in this map.
Object	clone()
boolean	containsValue(Object v)
boolean	equals(Object o)
void	forEach(ByteObjectBiConsumer<? super V> consumer)	Performs the given action for each entry in this map until all entries have been processed or the action throws an exception.
V	getOrDefault(byte 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()
ByteSet	keySet()
void	putAll(Map<? extends Byte, ? extends V> m)
String	toString()
ObjectCollection<V>	values()

Methods inherited from class it.unimi.dsi.fastutil.bytes.Byte2ObjectFunctions.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.bytes.Byte2ObjectFunction

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.bytes.Byte2ObjectMap

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

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

Method Details

containsValue

public boolean containsValue(Object v)

Specified by:

containsValue in interface Map<Byte,V>

getOrDefault

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

Deprecated.

Description copied from interface: Byte2ObjectFunction

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

Specified by:

getOrDefault in interface Byte2ObjectFunction<V>

Specified by:

getOrDefault in interface Byte2ObjectMap<V>

Specified by:

getOrDefault in interface Function<Byte,V>

Specified by:

getOrDefault in interface Map<Byte,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(byte key,
 V defaultValue)

Description copied from interface: Byte2ObjectFunction

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

Specified by:

getOrDefault in interface Byte2ObjectFunction<V>

Specified by:

getOrDefault in interface Byte2ObjectMap<V>

Overrides:

getOrDefault in class Byte2ObjectFunctions.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)

forEach

public void forEach(ByteObjectBiConsumer<? super V> consumer)

Description copied from interface: Byte2ObjectMap

Performs the given action for each entry in this map until all entries have been processed or the action throws an exception.

This default implementation just delegates to forEach on the type-specific entry set, taking care of using fastForEach if available.

Specified by:

forEach in interface Byte2ObjectMap<V>

See Also:

• Map.forEach(java.util.function.BiConsumer)

putAll

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

Specified by:

putAll in interface Map<Byte,V>

byte2ObjectEntrySet

public ObjectSet<Byte2ObjectMap.Entry<V>> byte2ObjectEntrySet()

Description copied from interface: Byte2ObjectMap

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:

byte2ObjectEntrySet in interface Byte2ObjectMap<V>

Returns:

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

See Also:

• Map.entrySet()

keySet

public ByteSet keySet()

Description copied from interface: Byte2ObjectMap

Specified by:

keySet in interface Byte2ObjectMap<V>

Specified by:

keySet in interface Map<Byte,V>

Returns:

a set view of the keys contained in this map.

See Also:

• Map.keySet()

values

public ObjectCollection<V> values()

Description copied from interface: Byte2ObjectMap

Specified by:

values in interface Byte2ObjectMap<V>

Specified by:

values in interface Map<Byte,V>

Returns:

a set view of the values contained in this map.

See Also:

• Map.values()

clone

public Object clone()

Overrides:

clone in class Byte2ObjectFunctions.EmptyFunction<V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<Byte,V>

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<Byte,V>

Overrides:

hashCode in class Byte2ObjectFunctions.EmptyFunction<V>

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<Byte,V>

Overrides:

equals in class Byte2ObjectFunctions.EmptyFunction<V>

toString

public String toString()

Overrides:

toString in class Byte2ObjectFunctions.EmptyFunction<V>