Package it.unimi.dsi.fastutil.objects

Class Reference2FloatMaps.EmptyMap<K>

java.lang.Object

it.unimi.dsi.fastutil.objects.AbstractReference2FloatFunction<K>

it.unimi.dsi.fastutil.objects.Reference2FloatFunctions.EmptyFunction<K>

it.unimi.dsi.fastutil.objects.Reference2FloatMaps.EmptyMap<K>

All Implemented Interfaces:

Function<K,Float>, Reference2FloatFunction<K>, Reference2FloatMap<K>, Serializable, Cloneable, Function<K,Float>, ToDoubleFunction<K>, Map<K,Float>

Direct Known Subclasses:

Reference2FloatSortedMaps.EmptySortedMap

Enclosing class:

Reference2FloatMaps

public static class Reference2FloatMaps.EmptyMap<K>
extends Reference2FloatFunctions.EmptyFunction<K>
implements Reference2FloatMap<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.Reference2FloatMap

Reference2FloatMap.Entry<K>, Reference2FloatMap.FastEntrySet<K>

Method Summary

Modifier and Type	Method	Description
Object	clone()
boolean	containsValue(float 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 Float> consumer)
float	getOrDefault(Object key, float defaultValue)	Returns the value associated by this function to the specified key, or give the specified value if not present.
Float	getOrDefault(Object key, Float defaultValue)	Deprecated.
int	hashCode()
boolean	isEmpty()
ReferenceSet<K>	keySet()
void	putAll(Map<? extends K,? extends Float> m)
ObjectSet<Reference2FloatMap.Entry<K>>	reference2FloatEntrySet()	Returns a type-specific set view of the mappings contained in this map.
String	toString()
FloatCollection	values()

Methods inherited from class it.unimi.dsi.fastutil.objects.Reference2FloatFunctions.EmptyFunction

clear, containsKey, defaultReturnValue, defaultReturnValue, getFloat, 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, replaceAll

Methods inherited from interface it.unimi.dsi.fastutil.objects.Reference2FloatFunction

andThen, andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, applyAsDouble, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, getFloat, put, removeFloat

Methods inherited from interface it.unimi.dsi.fastutil.objects.Reference2FloatMap

clear, computeFloat, computeFloatIfAbsent, computeFloatIfAbsentPartial, computeFloatIfPresent, computeIfAbsent, computeIfAbsent, containsKey, defaultReturnValue, defaultReturnValue, entrySet, get, merge, merge, mergeFloat, mergeFloat, mergeFloat, put, putIfAbsent, putIfAbsent, remove, remove, remove, replace, replace, replace, replace, size

Method Details

containsValue

public boolean containsValue(float v)

Description copied from interface: Reference2FloatMap

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

Specified by:

containsValue in interface Reference2FloatMap<K>

See Also:

• Map.containsValue(Object)

getOrDefault

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

Deprecated.

Description copied from interface: Reference2FloatMap

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,Float>

Specified by:

getOrDefault in interface Map<K,Float>

Specified by:

getOrDefault in interface Reference2FloatFunction<K>

Specified by:

getOrDefault in interface Reference2FloatMap<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 float getOrDefault(Object key,
 float defaultValue)

Description copied from interface: Reference2FloatFunction

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

Specified by:

getOrDefault in interface Reference2FloatFunction<K>

Specified by:

getOrDefault in interface Reference2FloatMap<K>

Overrides:

getOrDefault in class Reference2FloatFunctions.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,Float>

Specified by:

containsValue in interface Reference2FloatMap<K>

putAll

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

Specified by:

putAll in interface Map<K,Float>

reference2FloatEntrySet

public ObjectSet<Reference2FloatMap.Entry<K>> reference2FloatEntrySet()

Description copied from interface: Reference2FloatMap

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:

reference2FloatEntrySet in interface Reference2FloatMap<K>

Returns:

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

See Also:

• Map.entrySet()

keySet

public ReferenceSet<K> keySet()

Description copied from interface: Reference2FloatMap

Specified by:

keySet in interface Map<K,Float>

Specified by:

keySet in interface Reference2FloatMap<K>

Returns:

a set view of the keys contained in this map.

See Also:

• Map.keySet()

values

public FloatCollection values()

Description copied from interface: Reference2FloatMap

Specified by:

values in interface Map<K,Float>

Specified by:

values in interface Reference2FloatMap<K>

Returns:

a set view of the values contained in this map.

See Also:

• Map.values()

forEach

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

Specified by:

forEach in interface Map<K,Float>

Specified by:

forEach in interface Reference2FloatMap<K>

clone

public Object clone()

Overrides:

clone in class Reference2FloatFunctions.EmptyFunction<K>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<K,Float>

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<K,Float>

Overrides:

hashCode in class Reference2FloatFunctions.EmptyFunction<K>

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<K,Float>

Overrides:

equals in class Reference2FloatFunctions.EmptyFunction<K>

toString

public String toString()

Overrides:

toString in class Reference2FloatFunctions.EmptyFunction<K>