Package it.unimi.dsi.fastutil.bytes

Class Byte2ByteMaps.EmptyMap

java.lang.Object

it.unimi.dsi.fastutil.bytes.AbstractByte2ByteFunction

it.unimi.dsi.fastutil.bytes.Byte2ByteFunctions.EmptyFunction

it.unimi.dsi.fastutil.bytes.Byte2ByteMaps.EmptyMap

All Implemented Interfaces:

Byte2ByteFunction, Byte2ByteMap, Function<Byte,Byte>, Serializable, Cloneable, Function<Byte,Byte>, IntUnaryOperator, Map<Byte,Byte>

Direct Known Subclasses:

Byte2ByteSortedMaps.EmptySortedMap

Enclosing class:

Byte2ByteMaps

public static class Byte2ByteMaps.EmptyMap
extends Byte2ByteFunctions.EmptyFunction
implements Byte2ByteMap, 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.Byte2ByteMap

Byte2ByteMap.Entry, Byte2ByteMap.FastEntrySet

Method Summary

Modifier and Type	Method	Description
ObjectSet<Byte2ByteMap.Entry>	byte2ByteEntrySet()	Returns a type-specific set view of the mappings contained in this map.
Object	clone()
boolean	containsValue(byte v)	Returns true if this map maps one or more keys to the specified value.
boolean	containsValue(Object ov)	Deprecated. Please use the corresponding type-specific method instead.
boolean	equals(Object o)
void	forEach(BiConsumer<? super Byte,? super Byte> consumer)
byte	getOrDefault(byte key, byte defaultValue)	Returns the value associated by this function to the specified key, or give the specified value if not present.
Byte	getOrDefault(Object key, Byte defaultValue)	Deprecated.
int	hashCode()
boolean	isEmpty()
ByteSet	keySet()
void	putAll(Map<? extends Byte,? extends Byte> m)
String	toString()
ByteCollection	values()

Methods inherited from class it.unimi.dsi.fastutil.bytes.Byte2ByteFunctions.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.Byte2ByteFunction

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

Methods inherited from interface it.unimi.dsi.fastutil.bytes.Byte2ByteMap

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

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

apply

Methods inherited from interface java.util.function.IntUnaryOperator

andThen, compose

Methods inherited from interface java.util.Map

replaceAll

Method Details

containsValue

public boolean containsValue(byte v)

Description copied from interface: Byte2ByteMap

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

Specified by:

containsValue in interface Byte2ByteMap

See Also:

• Map.containsValue(Object)

getOrDefault

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

Deprecated.

Description copied from interface: Byte2ByteMap

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 Byte2ByteFunction

Specified by:

getOrDefault in interface Byte2ByteMap

Specified by:

getOrDefault in interface Function<Byte,Byte>

Specified by:

getOrDefault in interface Map<Byte,Byte>

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 byte getOrDefault(byte key,
 byte defaultValue)

Description copied from interface: Byte2ByteFunction

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

Specified by:

getOrDefault in interface Byte2ByteFunction

Specified by:

getOrDefault in interface Byte2ByteMap

Overrides:

getOrDefault in class Byte2ByteFunctions.EmptyFunction

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)

containsValue

@Deprecated
public boolean containsValue(Object ov)

Deprecated.

Please use the corresponding type-specific method instead.

Specified by:

containsValue in interface Byte2ByteMap

Specified by:

containsValue in interface Map<Byte,Byte>

putAll

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

Specified by:

putAll in interface Map<Byte,Byte>

byte2ByteEntrySet

public ObjectSet<Byte2ByteMap.Entry> byte2ByteEntrySet()

Description copied from interface: Byte2ByteMap

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:

byte2ByteEntrySet in interface Byte2ByteMap

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: Byte2ByteMap

Specified by:

keySet in interface Byte2ByteMap

Specified by:

keySet in interface Map<Byte,Byte>

Returns:

a set view of the keys contained in this map.

See Also:

• Map.keySet()

values

public ByteCollection values()

Description copied from interface: Byte2ByteMap

Specified by:

values in interface Byte2ByteMap

Specified by:

values in interface Map<Byte,Byte>

Returns:

a set view of the values contained in this map.

See Also:

• Map.values()

forEach

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

Specified by:

forEach in interface Byte2ByteMap

Specified by:

forEach in interface Map<Byte,Byte>

clone

public Object clone()

Overrides:

clone in class Byte2ByteFunctions.EmptyFunction

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<Byte,Byte>

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<Byte,Byte>

Overrides:

hashCode in class Byte2ByteFunctions.EmptyFunction

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<Byte,Byte>

Overrides:

equals in class Byte2ByteFunctions.EmptyFunction

toString

public String toString()

Overrides:

toString in class Byte2ByteFunctions.EmptyFunction