Package it.unimi.dsi.fastutil.objects

Class Object2BooleanMaps.EmptyMap<K>

java.lang.Object

it.unimi.dsi.fastutil.objects.AbstractObject2BooleanFunction<K>

it.unimi.dsi.fastutil.objects.Object2BooleanFunctions.EmptyFunction<K>

it.unimi.dsi.fastutil.objects.Object2BooleanMaps.EmptyMap<K>

All Implemented Interfaces:

Function<K,Boolean>, Object2BooleanFunction<K>, Object2BooleanMap<K>, Serializable, Cloneable, Function<K,Boolean>, Predicate<K>, Map<K,Boolean>

Direct Known Subclasses:

Object2BooleanSortedMaps.EmptySortedMap

Enclosing class:

Object2BooleanMaps

public static class Object2BooleanMaps.EmptyMap<K>
extends Object2BooleanFunctions.EmptyFunction<K>
implements Object2BooleanMap<K>, 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.objects.Object2BooleanMap

Object2BooleanMap.Entry<K>, Object2BooleanMap.FastEntrySet<K>

Method Summary

Modifier and Type	Method	Description
Object	clone()
boolean	containsValue(boolean 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(BiConsumer<? super K,? super Boolean> consumer)
boolean	getOrDefault(Object key, boolean defaultValue)	Returns the value associated by this function to the specified key, or give the specified value if not present.
Boolean	getOrDefault(Object key, Boolean defaultValue)	Deprecated.
int	hashCode()
boolean	isEmpty()
ObjectSet<K>	keySet()
ObjectSet<Object2BooleanMap.Entry<K>>	object2BooleanEntrySet()	Returns a type-specific set view of the mappings contained in this map.
void	putAll(Map<? extends K,? extends Boolean> m)
String	toString()
BooleanCollection	values()

Methods inherited from class it.unimi.dsi.fastutil.objects.Object2BooleanFunctions.EmptyFunction

clear, containsKey, defaultReturnValue, defaultReturnValue, getBoolean, 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 java.util.function.Function

compose

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, merge, putIfAbsent, remove, replace, replace, replaceAll

Methods inherited from interface it.unimi.dsi.fastutil.objects.Object2BooleanFunction

andThen, andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, getBoolean, put, removeBoolean, test

Methods inherited from interface it.unimi.dsi.fastutil.objects.Object2BooleanMap

clear, computeBoolean, computeBooleanIfAbsent, computeBooleanIfAbsentPartial, computeBooleanIfPresent, computeIfAbsent, computeIfAbsent, containsKey, defaultReturnValue, defaultReturnValue, entrySet, get, merge, put, putIfAbsent, remove, remove, replace, replace, size

Methods inherited from interface java.util.function.Predicate

and, negate, or

Method Details

containsValue

public boolean containsValue(boolean v)

Description copied from interface: Object2BooleanMap

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

Specified by:

containsValue in interface Object2BooleanMap<K>

See Also:

• Map.containsValue(Object)

getOrDefault

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

Deprecated.

Description copied from interface: Object2BooleanMap

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

This default implementation just delegates to the corresponding Map method.

Specified by:

getOrDefault in interface Function<K,Boolean>

Specified by:

getOrDefault in interface Map<K,Boolean>

Specified by:

getOrDefault in interface Object2BooleanFunction<K>

Specified by:

getOrDefault in interface Object2BooleanMap<K>

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 boolean getOrDefault(Object key,
 boolean defaultValue)

Description copied from interface: Object2BooleanFunction

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

Specified by:

getOrDefault in interface Object2BooleanFunction<K>

Specified by:

getOrDefault in interface Object2BooleanMap<K>

Overrides:

getOrDefault in class Object2BooleanFunctions.EmptyFunction<K>

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)

containsValue

@Deprecated
public boolean containsValue(Object ov)

Deprecated.

Please use the corresponding type-specific method instead.

Specified by:

containsValue in interface Map<K,Boolean>

Specified by:

containsValue in interface Object2BooleanMap<K>

putAll

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

Specified by:

putAll in interface Map<K,Boolean>

object2BooleanEntrySet

public ObjectSet<Object2BooleanMap.Entry<K>> object2BooleanEntrySet()

Description copied from interface: Object2BooleanMap

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:

object2BooleanEntrySet in interface Object2BooleanMap<K>

Returns:

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

See Also:

• Map.entrySet()

keySet

public ObjectSet<K> keySet()

Description copied from interface: Object2BooleanMap

Specified by:

keySet in interface Map<K,Boolean>

Specified by:

keySet in interface Object2BooleanMap<K>

Returns:

a set view of the keys contained in this map.

See Also:

• Map.keySet()

values

public BooleanCollection values()

Description copied from interface: Object2BooleanMap

Specified by:

values in interface Map<K,Boolean>

Specified by:

values in interface Object2BooleanMap<K>

Returns:

a set view of the values contained in this map.

See Also:

• Map.values()

forEach

public void forEach(BiConsumer<? super K,? super Boolean> consumer)

Specified by:

forEach in interface Map<K,Boolean>

Specified by:

forEach in interface Object2BooleanMap<K>

clone

public Object clone()

Overrides:

clone in class Object2BooleanFunctions.EmptyFunction<K>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<K,Boolean>

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<K,Boolean>

Overrides:

hashCode in class Object2BooleanFunctions.EmptyFunction<K>

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<K,Boolean>

Overrides:

equals in class Object2BooleanFunctions.EmptyFunction<K>

toString

public String toString()

Overrides:

toString in class Object2BooleanFunctions.EmptyFunction<K>