it.unimi.dsi.fastutil.chars
Class Char2IntMaps.EmptyMap

java.lang.Object
  it.unimi.dsi.fastutil.chars.AbstractChar2IntFunction
      it.unimi.dsi.fastutil.chars.Char2IntFunctions.EmptyFunction
          it.unimi.dsi.fastutil.chars.Char2IntMaps.EmptyMap

All Implemented Interfaces:

Char2IntFunction, Char2IntMap, Function<Character,Integer>, Serializable, Cloneable, Map<Character,Integer>

Direct Known Subclasses:

Char2IntSortedMaps.EmptySortedMap

Enclosing class:

Char2IntMaps

public static class Char2IntMaps.EmptyMap
extends Char2IntFunctions.EmptyFunction
implements Char2IntMap, 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.chars.Char2IntMap

Char2IntMap.Entry, Char2IntMap.FastEntrySet

Field Summary

static long

serialVersionUID

Method Summary

ObjectSet<Char2IntMap.Entry>	char2IntEntrySet() Returns a type-specific set view of the mappings contained in this map.
Object	clone()
boolean	containsValue(int v)
boolean	containsValue(Object ov)
ObjectSet<Map.Entry<Character,Integer>>	entrySet() Returns a set view of the mappings contained in this map.
boolean	equals(Object o)
int	hashCode()
boolean	isEmpty()
CharSet	keySet() Returns a set view of the keys contained in this map.
void	putAll(Map<? extends Character,? extends Integer> m)
String	toString()
IntCollection	values() Returns a set view of the values contained in this map.

Methods inherited from class it.unimi.dsi.fastutil.chars.Char2IntFunctions.EmptyFunction

clear, containsKey, defaultReturnValue, defaultReturnValue, get, get, size

Methods inherited from class it.unimi.dsi.fastutil.chars.AbstractChar2IntFunction

containsKey, put, put, remove, remove

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.chars.Char2IntFunction

containsKey, defaultReturnValue, defaultReturnValue, get, put, remove

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

clear, containsKey, get, put, remove, size

Methods inherited from interface java.util.Map

clear, containsKey, get, put, remove, size

Field Detail

serialVersionUID

public static final long serialVersionUID

See Also:

Constant Field Values

Method Detail

containsValue

public boolean containsValue(int v)

Specified by:

containsValue in interface Char2IntMap

See Also:

Map.containsValue(Object)

putAll

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

Specified by:

putAll in interface Map<Character,Integer>

char2IntEntrySet

public ObjectSet<Char2IntMap.Entry> char2IntEntrySet()

Description copied from interface: Char2IntMap

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 Char2IntMap.entrySet() so that it returns an ObjectSet of objects of type Char2IntMap.Entry (the latter makes it possible to access keys and values with type-specific methods).

Specified by:

char2IntEntrySet in interface Char2IntMap

Returns:

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

See Also:

Char2IntMap.entrySet()

keySet

public CharSet keySet()

Description copied from interface: Char2IntMap

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

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

Specified by:

keySet in interface Char2IntMap

Specified by:

keySet in interface Map<Character,Integer>

Returns:

a set view of the keys contained in this map.

See Also:

Map.keySet()

values

public IntCollection values()

Description copied from interface: Char2IntMap

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

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

Specified by:

values in interface Char2IntMap

Specified by:

values in interface Map<Character,Integer>

Returns:

a set view of the values contained in this map.

See Also:

Map.values()

containsValue

public boolean containsValue(Object ov)

Specified by:

containsValue in interface Map<Character,Integer>

clone

public Object clone()

Overrides:

clone in class Char2IntFunctions.EmptyFunction

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<Character,Integer>

entrySet

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

Description copied from interface: Char2IntMap

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

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

Specified by:

entrySet in interface Char2IntMap

Specified by:

entrySet in interface Map<Character,Integer>

Returns:

a set view of the mappings contained in this map.

See Also:

Map.entrySet()

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<Character,Integer>

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<Character,Integer>

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object