it.unimi.dsi.fastutil.objects

Class Reference2CharMaps.EmptyMap<K>

java.lang.Object

it.unimi.dsi.fastutil.objects.AbstractReference2CharFunction<K>

it.unimi.dsi.fastutil.objects.Reference2CharFunctions.EmptyFunction<K>

it.unimi.dsi.fastutil.objects.Reference2CharMaps.EmptyMap<K>

All Implemented Interfaces:

it.unimi.dsi.fastutil.objects.Reference2CharFunction<K>, Reference2CharMap<K>, java.io.Serializable, java.lang.Cloneable, java.util.function.Function<K,java.lang.Character>, java.util.function.ToIntFunction<K>, java.util.Map<K,java.lang.Character>

Direct Known Subclasses:

Reference2CharSortedMaps.EmptySortedMap

Enclosing class:

Reference2CharMaps

public static class Reference2CharMaps.EmptyMap<K>
extends Reference2CharFunctions.EmptyFunction<K>
implements Reference2CharMap<K>, java.io.Serializable, java.lang.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.Reference2CharMap

Reference2CharMap.Entry<K>, Reference2CharMap.FastEntrySet<K>

Field Summary

Fields inherited from class it.unimi.dsi.fastutil.objects.AbstractReference2CharFunction

defRetValue

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	EmptyMap()

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone()
boolean	containsValue(char v) Returns true if this map maps one or more keys to the specified value.
boolean	containsValue(java.lang.Object ov) Deprecated. Please use the corresponding type-specific method instead.
boolean	equals(java.lang.Object o)
void	forEach(java.util.function.BiConsumer<? super K,? super java.lang.Character> consumer)
char	getOrDefault(java.lang.Object key, char defaultValue) Returns the value to which the specified key is mapped, or the defaultValue if this map contains no mapping for the key.
java.lang.Character	getOrDefault(java.lang.Object key, java.lang.Character defaultValue) Deprecated.
int	hashCode()
boolean	isEmpty()
it.unimi.dsi.fastutil.objects.ReferenceSet<K>	keySet()
void	putAll(java.util.Map<? extends K,? extends java.lang.Character> m)
it.unimi.dsi.fastutil.objects.ObjectSet<Reference2CharMap.Entry<K>>	reference2CharEntrySet() Returns a type-specific set view of the mappings contained in this map.
java.lang.String	toString()
it.unimi.dsi.fastutil.chars.CharCollection	values()

Methods inherited from class it.unimi.dsi.fastutil.objects.Reference2CharFunctions.EmptyFunction

clear, containsKey, defaultReturnValue, defaultReturnValue, getChar, size

Methods inherited from class java.lang.Object

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

Methods inherited from interface it.unimi.dsi.fastutil.objects.Reference2CharMap

clear, computeChar, computeCharIfAbsent, computeCharIfAbsentPartial, computeCharIfPresent, computeIfAbsent, computeIfAbsent, containsKey, defaultReturnValue, defaultReturnValue, entrySet, get, merge, merge, mergeChar, mergeChar, mergeChar, put, putIfAbsent, putIfAbsent, remove, remove, remove, replace, replace, replace, replace, size

Methods inherited from interface it.unimi.dsi.fastutil.objects.Reference2CharFunction

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

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

apply

Methods inherited from interface java.util.function.Function

compose, identity

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, replaceAll

Constructor Detail

EmptyMap

protected EmptyMap()

Method Detail

containsValue

public boolean containsValue(char v)

Description copied from interface: Reference2CharMap

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

Specified by:

containsValue in interface Reference2CharMap<K>

See Also:

Map.containsValue(Object)

getOrDefault

@Deprecated
public java.lang.Character getOrDefault(java.lang.Object key,
                                                    java.lang.Character defaultValue)

Deprecated.

Description copied from interface: Reference2CharMap

This default implementation just delegates to the corresponding Map method.

Specified by:

getOrDefault in interface it.unimi.dsi.fastutil.objects.Reference2CharFunction<K>

Specified by:

getOrDefault in interface Reference2CharMap<K>

Specified by:

getOrDefault in interface java.util.Map<K,java.lang.Character>

getOrDefault

public char getOrDefault(java.lang.Object key,
                         char defaultValue)

Description copied from interface: Reference2CharMap

Returns the value to which the specified key is mapped, or the defaultValue if this map contains no mapping for the key.

Specified by:

getOrDefault in interface it.unimi.dsi.fastutil.objects.Reference2CharFunction<K>

Specified by:

getOrDefault in interface Reference2CharMap<K>

Overrides:

getOrDefault in class Reference2CharFunctions.EmptyFunction<K>

Parameters:

key - the key.

defaultValue - the default mapping of the key.

Returns:

the value to which the specified key is mapped, or the defaultValue if this map contains no mapping for the key.

See Also:

Map.getOrDefault(Object, Object)

containsValue

@Deprecated
public boolean containsValue(java.lang.Object ov)

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

Specified by:

containsValue in interface Reference2CharMap<K>

Specified by:

containsValue in interface java.util.Map<K,java.lang.Character>

putAll

public void putAll(java.util.Map<? extends K,? extends java.lang.Character> m)

Specified by:

putAll in interface java.util.Map<K,java.lang.Character>

reference2CharEntrySet

public it.unimi.dsi.fastutil.objects.ObjectSet<Reference2CharMap.Entry<K>> reference2CharEntrySet()

Description copied from interface: Reference2CharMap

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:

reference2CharEntrySet in interface Reference2CharMap<K>

Returns:

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

See Also:

Map.entrySet()

keySet

public it.unimi.dsi.fastutil.objects.ReferenceSet<K> keySet()

Description copied from interface: Reference2CharMap

Specified by:

keySet in interface Reference2CharMap<K>

Specified by:

keySet in interface java.util.Map<K,java.lang.Character>

Returns:

a set view of the keys contained in this map.

See Also:

Map.keySet()

values

public it.unimi.dsi.fastutil.chars.CharCollection values()

Description copied from interface: Reference2CharMap

Specified by:

values in interface Reference2CharMap<K>

Specified by:

values in interface java.util.Map<K,java.lang.Character>

Returns:

a set view of the values contained in this map.

See Also:

Map.values()

forEach

public void forEach(java.util.function.BiConsumer<? super K,? super java.lang.Character> consumer)

Specified by:

forEach in interface Reference2CharMap<K>

Specified by:

forEach in interface java.util.Map<K,java.lang.Character>

clone

public java.lang.Object clone()

Overrides:

clone in class Reference2CharFunctions.EmptyFunction<K>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Map<K,java.lang.Character>

hashCode

public int hashCode()

Specified by:

hashCode in interface java.util.Map<K,java.lang.Character>

Overrides:

hashCode in class Reference2CharFunctions.EmptyFunction<K>

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in interface java.util.Map<K,java.lang.Character>

Overrides:

equals in class Reference2CharFunctions.EmptyFunction<K>

toString

public java.lang.String toString()

Overrides:

toString in class Reference2CharFunctions.EmptyFunction<K>