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:

Function<Long,Integer>, Long2IntFunction, Long2IntMap, Serializable, Cloneable, Function<Long,Integer>, LongToIntFunction, Map<Long,Integer>

Direct Known Subclasses:

Long2IntSortedMaps.EmptySortedMap

Enclosing class:

Long2IntMaps

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

Long2IntMap.Entry, Long2IntMap.FastEntrySet

Method Summary

Modifier and Type	Method	Description
Object	clone()
boolean	containsValue(int 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(LongIntBiConsumer consumer)	Performs the given action for each entry in this map until all entries have been processed or the action throws an exception.
int	getOrDefault(long key, int defaultValue)	Returns the value associated by this function to the specified key, or give the specified value if not present.
Integer	getOrDefault(Object key, Integer defaultValue)	Deprecated.
int	hashCode()
boolean	isEmpty()
LongSet	keySet()
ObjectSet<Long2IntMap.Entry>	long2IntEntrySet()	Returns a type-specific set view of the mappings contained in this map.
void	putAll(Map<? extends Long, ? extends Integer> m)
String	toString()
IntCollection	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.Function

apply

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

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.longs.Long2IntMap

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

Methods inherited from interface java.util.Map

replaceAll

Method Details

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)

getOrDefault

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

Deprecated.

Description copied from interface: Long2IntFunction

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

Specified by:

getOrDefault in interface Function<Long,Integer>

Specified by:

getOrDefault in interface Long2IntFunction

Specified by:

getOrDefault in interface Long2IntMap

Specified by:

getOrDefault in interface Map<Long,Integer>

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 int getOrDefault(long key,
 int defaultValue)

Description copied from interface: Long2IntFunction

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

Specified by:

getOrDefault in interface Long2IntFunction

Specified by:

getOrDefault in interface Long2IntMap

Overrides:

getOrDefault in class Long2IntFunctions.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)

forEach

public void forEach(LongIntBiConsumer consumer)

Description copied from interface: Long2IntMap

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 Long2IntMap

See Also:

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

containsValue

@Deprecated
public boolean containsValue(Object ov)

Deprecated.

Please use the corresponding type-specific method instead.

Specified by:

containsValue in interface Long2IntMap

Specified by:

containsValue in interface Map<Long,Integer>

putAll

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

Specified by:

putAll in interface Map<Long,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

Specified by:

keySet in interface Long2IntMap

Specified by:

keySet in interface Map<Long,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

Specified by:

values in interface Long2IntMap

Specified by:

values in interface Map<Long,Integer>

Returns:

a set view of the values contained in this map.

See Also:

• Map.values()

clone

public Object clone()

Overrides:

clone in class Long2IntFunctions.EmptyFunction

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<Long,Integer>

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<Long,Integer>

Overrides:

hashCode in class Long2IntFunctions.EmptyFunction

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<Long,Integer>

Overrides:

equals in class Long2IntFunctions.EmptyFunction

toString

public String toString()

Overrides:

toString in class Long2IntFunctions.EmptyFunction