it.unimi.dsi.fastutil.ints

Class Int2IntMaps.EmptyMap

java.lang.Object

it.unimi.dsi.fastutil.ints.AbstractInt2IntFunction

it.unimi.dsi.fastutil.ints.Int2IntFunctions.EmptyFunction

it.unimi.dsi.fastutil.ints.Int2IntMaps.EmptyMap

All Implemented Interfaces:

it.unimi.dsi.fastutil.ints.Int2IntFunction, Int2IntMap, java.io.Serializable, java.lang.Cloneable, java.util.function.Function<java.lang.Integer,java.lang.Integer>, java.util.function.IntUnaryOperator, java.util.Map<java.lang.Integer,java.lang.Integer>

Direct Known Subclasses:

Int2IntSortedMaps.EmptySortedMap

Enclosing class:

Int2IntMaps

public static class Int2IntMaps.EmptyMap
extends Int2IntFunctions.EmptyFunction
implements Int2IntMap, 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.ints.Int2IntMap

Int2IntMap.Entry, Int2IntMap.FastEntrySet

Field Summary

Fields inherited from class it.unimi.dsi.fastutil.ints.AbstractInt2IntFunction

defRetValue

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	EmptyMap()

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone()
boolean	containsValue(int 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 java.lang.Integer,? super java.lang.Integer> consumer)
int	getOrDefault(int key, int 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.Integer	getOrDefault(java.lang.Object key, java.lang.Integer defaultValue) Deprecated.
int	hashCode()
it.unimi.dsi.fastutil.objects.ObjectSet<Int2IntMap.Entry>	int2IntEntrySet() Returns a type-specific set view of the mappings contained in this map.
boolean	isEmpty()
it.unimi.dsi.fastutil.ints.IntSet	keySet()
void	putAll(java.util.Map<? extends java.lang.Integer,? extends java.lang.Integer> m)
java.lang.String	toString()
it.unimi.dsi.fastutil.ints.IntCollection	values()

Methods inherited from class it.unimi.dsi.fastutil.ints.Int2IntFunctions.EmptyFunction

clear, containsKey, defaultReturnValue, defaultReturnValue, get, size

Methods inherited from class java.lang.Object

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

Methods inherited from interface it.unimi.dsi.fastutil.ints.Int2IntMap

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

Methods inherited from interface it.unimi.dsi.fastutil.ints.Int2IntFunction

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

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

Constructor Detail

EmptyMap

protected EmptyMap()

Method Detail

containsValue

public boolean containsValue(int v)

Description copied from interface: Int2IntMap

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

Specified by:

containsValue in interface Int2IntMap

See Also:

Map.containsValue(Object)

getOrDefault

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

Deprecated.

Description copied from interface: Int2IntMap

This default implementation just delegates to the corresponding Map method.

Specified by:

getOrDefault in interface it.unimi.dsi.fastutil.ints.Int2IntFunction

Specified by:

getOrDefault in interface Int2IntMap

Specified by:

getOrDefault in interface java.util.Map<java.lang.Integer,java.lang.Integer>

getOrDefault

public int getOrDefault(int key,
                        int defaultValue)

Description copied from interface: Int2IntMap

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.ints.Int2IntFunction

Specified by:

getOrDefault in interface Int2IntMap

Overrides:

getOrDefault in class Int2IntFunctions.EmptyFunction

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 Int2IntMap

Specified by:

containsValue in interface java.util.Map<java.lang.Integer,java.lang.Integer>

putAll

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

Specified by:

putAll in interface java.util.Map<java.lang.Integer,java.lang.Integer>

int2IntEntrySet

public it.unimi.dsi.fastutil.objects.ObjectSet<Int2IntMap.Entry> int2IntEntrySet()

Description copied from interface: Int2IntMap

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:

int2IntEntrySet in interface Int2IntMap

Returns:

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

See Also:

Map.entrySet()

keySet

public it.unimi.dsi.fastutil.ints.IntSet keySet()

Description copied from interface: Int2IntMap

Specified by:

keySet in interface Int2IntMap

Specified by:

keySet in interface java.util.Map<java.lang.Integer,java.lang.Integer>

Returns:

a set view of the keys contained in this map.

See Also:

Map.keySet()

values

public it.unimi.dsi.fastutil.ints.IntCollection values()

Description copied from interface: Int2IntMap

Specified by:

values in interface Int2IntMap

Specified by:

values in interface java.util.Map<java.lang.Integer,java.lang.Integer>

Returns:

a set view of the values contained in this map.

See Also:

Map.values()

forEach

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

Specified by:

forEach in interface Int2IntMap

Specified by:

forEach in interface java.util.Map<java.lang.Integer,java.lang.Integer>

clone

public java.lang.Object clone()

Overrides:

clone in class Int2IntFunctions.EmptyFunction

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Map<java.lang.Integer,java.lang.Integer>

hashCode

public int hashCode()

Specified by:

hashCode in interface java.util.Map<java.lang.Integer,java.lang.Integer>

Overrides:

hashCode in class Int2IntFunctions.EmptyFunction

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in interface java.util.Map<java.lang.Integer,java.lang.Integer>

Overrides:

equals in class Int2IntFunctions.EmptyFunction

toString

public java.lang.String toString()

Overrides:

toString in class Int2IntFunctions.EmptyFunction