Package it.unimi.dsi.fastutil.ints

Class Int2IntMaps.Singleton

java.lang.Object

it.unimi.dsi.fastutil.ints.AbstractInt2IntFunction

it.unimi.dsi.fastutil.ints.Int2IntFunctions.Singleton

it.unimi.dsi.fastutil.ints.Int2IntMaps.Singleton

All Implemented Interfaces:

Function<Integer,Integer>, Int2IntFunction, Int2IntMap, Serializable, Cloneable, Function<Integer,Integer>, IntUnaryOperator, Map<Integer,Integer>

Direct Known Subclasses:

Int2IntSortedMaps.Singleton

Enclosing class:

Int2IntMaps

public static class Int2IntMaps.Singleton
extends Int2IntFunctions.Singleton
implements Int2IntMap, Serializable, Cloneable

An immutable class representing a type-specific singleton 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

Method Summary

Modifier and Type	Method	Description
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.
ObjectSet<Map.Entry<Integer,Integer>>	entrySet()	Deprecated. Please use the corresponding type-specific method instead.
boolean	equals(Object o)
int	hashCode()
ObjectSet<Int2IntMap.Entry>	int2IntEntrySet()	Returns a type-specific set view of the mappings contained in this map.
boolean	isEmpty()
IntSet	keySet()
void	putAll(Map<? extends Integer,? extends Integer> m)
String	toString()
IntCollection	values()

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

clone, containsKey, get, getOrDefault, size

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

defaultReturnValue, defaultReturnValue

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.ints.Int2IntFunction

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.ints.Int2IntMap

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

Methods inherited from interface java.util.function.IntUnaryOperator

andThen, compose

Methods inherited from interface java.util.Map

replaceAll

Method Details

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)

containsValue

@Deprecated
public boolean containsValue(Object ov)

Deprecated.

Please use the corresponding type-specific method instead.

Specified by:

containsValue in interface Int2IntMap

Specified by:

containsValue in interface Map<Integer,Integer>

putAll

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

Specified by:

putAll in interface Map<Integer,Integer>

int2IntEntrySet

public 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()

entrySet

@Deprecated
public ObjectSet<Map.Entry<Integer,Integer>> entrySet()

Deprecated.

Please use the corresponding type-specific method instead.

Returns a set view of the mappings contained in this map.

Specified by:

entrySet in interface Int2IntMap

Specified by:

entrySet in interface Map<Integer,Integer>

Returns:

a set view of the mappings contained in this map.

See Also:

• Map.entrySet()

keySet

public IntSet keySet()

Description copied from interface: Int2IntMap

Specified by:

keySet in interface Int2IntMap

Specified by:

keySet in interface Map<Integer,Integer>

Returns:

a set view of the keys contained in this map.

See Also:

• Map.keySet()

values

public IntCollection values()

Description copied from interface: Int2IntMap

Specified by:

values in interface Int2IntMap

Specified by:

values in interface Map<Integer,Integer>

Returns:

a set view of the values contained in this map.

See Also:

• Map.values()

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<Integer,Integer>

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<Integer,Integer>

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<Integer,Integer>

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object