it.unimi.dsi.fastutil.doubles

Class Double2DoubleMaps.EmptyMap

java.lang.Object

it.unimi.dsi.fastutil.doubles.AbstractDouble2DoubleFunction

it.unimi.dsi.fastutil.doubles.Double2DoubleFunctions.EmptyFunction

it.unimi.dsi.fastutil.doubles.Double2DoubleMaps.EmptyMap

All Implemented Interfaces:

it.unimi.dsi.fastutil.doubles.Double2DoubleFunction, Double2DoubleMap, java.io.Serializable, java.lang.Cloneable, java.util.function.DoubleUnaryOperator, java.util.function.Function<java.lang.Double,java.lang.Double>, java.util.Map<java.lang.Double,java.lang.Double>

Direct Known Subclasses:

Double2DoubleSortedMaps.EmptySortedMap

Enclosing class:

Double2DoubleMaps

public static class Double2DoubleMaps.EmptyMap
extends Double2DoubleFunctions.EmptyFunction
implements Double2DoubleMap, java.io.Serializable, java.lang.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.doubles.Double2DoubleMap

Double2DoubleMap.Entry, Double2DoubleMap.FastEntrySet

Field Summary

Fields inherited from class it.unimi.dsi.fastutil.doubles.AbstractDouble2DoubleFunction

defRetValue

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	EmptyMap()

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone()
boolean	containsValue(double v) Returns true if this map maps one or more keys to the specified value.
boolean	containsValue(java.lang.Object ov) Deprecated. Please use the corresponding type-specific method instead.
it.unimi.dsi.fastutil.objects.ObjectSet<Double2DoubleMap.Entry>	double2DoubleEntrySet() Returns a type-specific set view of the mappings contained in this map.
boolean	equals(java.lang.Object o)
void	forEach(java.util.function.BiConsumer<? super java.lang.Double,? super java.lang.Double> consumer)
double	getOrDefault(double key, double defaultValue) Returns the value to which the specified key is mapped, or the defaultValue if this map contains no mapping for the key.
java.lang.Double	getOrDefault(java.lang.Object key, java.lang.Double defaultValue) Deprecated.
int	hashCode()
boolean	isEmpty()
it.unimi.dsi.fastutil.doubles.DoubleSet	keySet()
void	putAll(java.util.Map<? extends java.lang.Double,? extends java.lang.Double> m)
java.lang.String	toString()
it.unimi.dsi.fastutil.doubles.DoubleCollection	values()

Methods inherited from class it.unimi.dsi.fastutil.doubles.Double2DoubleFunctions.EmptyFunction

clear, containsKey, defaultReturnValue, defaultReturnValue, get, size

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.doubles.Double2DoubleMap

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

Methods inherited from interface it.unimi.dsi.fastutil.doubles.Double2DoubleFunction

andThen, andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, applyAsDouble, compose, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, get, identity, put, remove

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

apply

Methods inherited from interface java.util.function.DoubleUnaryOperator

andThen, compose

Methods inherited from interface java.util.Map

replaceAll

Constructor Detail

EmptyMap

protected EmptyMap()

Method Detail

containsValue

public boolean containsValue(double v)

Description copied from interface: Double2DoubleMap

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

Specified by:

containsValue in interface Double2DoubleMap

See Also:

Map.containsValue(Object)

getOrDefault

@Deprecated
public java.lang.Double getOrDefault(java.lang.Object key,
                                                 java.lang.Double defaultValue)

Deprecated.

Description copied from interface: Double2DoubleMap

This default implementation just delegates to the corresponding Map method.

Specified by:

getOrDefault in interface it.unimi.dsi.fastutil.doubles.Double2DoubleFunction

Specified by:

getOrDefault in interface Double2DoubleMap

Specified by:

getOrDefault in interface java.util.Map<java.lang.Double,java.lang.Double>

getOrDefault

public double getOrDefault(double key,
                           double defaultValue)

Description copied from interface: Double2DoubleMap

Returns the value to which the specified key is mapped, or the defaultValue if this map contains no mapping for the key.

Specified by:

getOrDefault in interface it.unimi.dsi.fastutil.doubles.Double2DoubleFunction

Specified by:

getOrDefault in interface Double2DoubleMap

Overrides:

getOrDefault in class Double2DoubleFunctions.EmptyFunction

Parameters:

key - the key.

defaultValue - the default mapping of the key.

Returns:

the value to which the specified key is mapped, or the defaultValue if this map contains no mapping for the key.

See Also:

Map.getOrDefault(Object, Object)

containsValue

@Deprecated
public boolean containsValue(java.lang.Object ov)

Deprecated. Please use the corresponding type-specific method instead.

Specified by:

containsValue in interface Double2DoubleMap

Specified by:

containsValue in interface java.util.Map<java.lang.Double,java.lang.Double>

putAll

public void putAll(java.util.Map<? extends java.lang.Double,? extends java.lang.Double> m)

Specified by:

putAll in interface java.util.Map<java.lang.Double,java.lang.Double>

double2DoubleEntrySet

public it.unimi.dsi.fastutil.objects.ObjectSet<Double2DoubleMap.Entry> double2DoubleEntrySet()

Description copied from interface: Double2DoubleMap

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:

double2DoubleEntrySet in interface Double2DoubleMap

Returns:

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

See Also:

Map.entrySet()

keySet

public it.unimi.dsi.fastutil.doubles.DoubleSet keySet()

Description copied from interface: Double2DoubleMap

Specified by:

keySet in interface Double2DoubleMap

Specified by:

keySet in interface java.util.Map<java.lang.Double,java.lang.Double>

Returns:

a set view of the keys contained in this map.

See Also:

Map.keySet()

values

public it.unimi.dsi.fastutil.doubles.DoubleCollection values()

Description copied from interface: Double2DoubleMap

Specified by:

values in interface Double2DoubleMap

Specified by:

values in interface java.util.Map<java.lang.Double,java.lang.Double>

Returns:

a set view of the values contained in this map.

See Also:

Map.values()

forEach

public void forEach(java.util.function.BiConsumer<? super java.lang.Double,? super java.lang.Double> consumer)

Specified by:

forEach in interface Double2DoubleMap

Specified by:

forEach in interface java.util.Map<java.lang.Double,java.lang.Double>

clone

public java.lang.Object clone()

Overrides:

clone in class Double2DoubleFunctions.EmptyFunction

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Map<java.lang.Double,java.lang.Double>

hashCode

public int hashCode()

Specified by:

hashCode in interface java.util.Map<java.lang.Double,java.lang.Double>

Overrides:

hashCode in class Double2DoubleFunctions.EmptyFunction

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in interface java.util.Map<java.lang.Double,java.lang.Double>

Overrides:

equals in class Double2DoubleFunctions.EmptyFunction

toString

public java.lang.String toString()

Overrides:

toString in class Double2DoubleFunctions.EmptyFunction