it.unimi.dsi.fastutil.longs

Class Long2IntMaps.EmptyMap

java.lang.Object

it.unimi.dsi.fastutil.longs.AbstractLong2IntFunction

it.unimi.dsi.fastutil.longs.Long2IntFunctions.EmptyFunction

it.unimi.dsi.fastutil.longs.Long2IntMaps.EmptyMap

All Implemented Interfaces:

Long2IntFunction, Long2IntMap, java.io.Serializable, java.lang.Cloneable, java.util.function.Function<java.lang.Long,java.lang.Integer>, java.util.function.LongToIntFunction, java.util.Map<java.lang.Long,java.lang.Integer>

Direct Known Subclasses:

Long2IntSortedMaps.EmptySortedMap

Enclosing class:

Long2IntMaps

public static class Long2IntMaps.EmptyMap
extends Long2IntFunctions.EmptyFunction
implements Long2IntMap, 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.longs.Long2IntMap

Long2IntMap.Entry, Long2IntMap.FastEntrySet

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)
int	hashCode()
boolean	isEmpty()
LongSet	keySet() Note that this specification strengthens the one given in Map.keySet().
ObjectSet<Long2IntMap.Entry>	long2IntEntrySet() Returns a type-specific set view of the mappings contained in this map.
void	putAll(java.util.Map<? extends java.lang.Long,? extends java.lang.Integer> m)
java.lang.String	toString()
IntCollection	values() Note that this specification strengthens the one given in Map.values().

Methods inherited from class it.unimi.dsi.fastutil.longs.Long2IntFunctions.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.longs.Long2IntMap

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

Methods inherited from interface it.unimi.dsi.fastutil.longs.Long2IntFunction

applyAsInt, get, put, remove

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

apply

Methods inherited from interface java.util.function.Function

andThen, compose, identity

Methods inherited from interface java.util.Map

forEach, replaceAll

Method Detail

containsValue

public boolean containsValue(int v)

Description copied from interface: Long2IntMap

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

Specified by:

containsValue in interface Long2IntMap

See Also:

Map.containsValue(Object)

containsValue

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

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

Specified by:

containsValue in interface Long2IntMap

Specified by:

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

putAll

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

Specified by:

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

long2IntEntrySet

public ObjectSet<Long2IntMap.Entry> long2IntEntrySet()

Description copied from interface: Long2IntMap

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:

long2IntEntrySet in interface Long2IntMap

Returns:

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

See Also:

Map.entrySet()

keySet

public LongSet keySet()

Description copied from interface: Long2IntMap

Note that this specification strengthens the one given in Map.keySet().

Specified by:

keySet in interface Long2IntMap

Specified by:

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

Returns:

a set view of the keys contained in this map.

See Also:

Map.keySet()

values

public IntCollection values()

Description copied from interface: Long2IntMap

Note that this specification strengthens the one given in Map.values().

Specified by:

values in interface Long2IntMap

Specified by:

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

Returns:

a set view of the values contained in this map.

See Also:

Map.values()

clone

public java.lang.Object clone()

Overrides:

clone in class Long2IntFunctions.EmptyFunction

isEmpty

public boolean isEmpty()

Specified by:

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

hashCode

public int hashCode()

Specified by:

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

Overrides:

hashCode in class Long2IntFunctions.EmptyFunction

equals

public boolean equals(java.lang.Object o)

Specified by:

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

Overrides:

equals in class Long2IntFunctions.EmptyFunction

toString

public java.lang.String toString()

Overrides:

toString in class Long2IntFunctions.EmptyFunction