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:

Double2DoubleFunction, Double2DoubleMap, Function<java.lang.Double,java.lang.Double>, java.io.Serializable, java.lang.Cloneable, 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

Method Summary

java.lang.Object	clone()
boolean	containsValue(double v)
boolean	containsValue(java.lang.Object ov)
ObjectSet<Double2DoubleMap.Entry>	double2DoubleEntrySet() Returns a type-specific set view of the mappings contained in this map.
ObjectSet<java.util.Map.Entry<java.lang.Double,java.lang.Double>>	entrySet() Returns a set view of the mappings contained in this map.
boolean	equals(java.lang.Object o)
int	hashCode()
boolean	isEmpty()
DoubleSet	keySet() Returns a set view of the keys contained in this map.
void	putAll(java.util.Map<? extends java.lang.Double,? extends java.lang.Double> m)
java.lang.String	toString()
DoubleCollection	values() Returns a set view of the values contained in this map.

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

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

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

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.doubles.Double2DoubleFunction

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

Method Detail

containsValue

public boolean containsValue(double v)

Specified by:

containsValue in interface Double2DoubleMap

See Also:

Map.containsValue(Object)

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 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 Double2DoubleMap.entrySet() so that it returns an ObjectSet of objects of type Map.Entry (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:

Double2DoubleMap.entrySet()

keySet

public DoubleSet keySet()

Description copied from interface: Double2DoubleMap

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 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 DoubleCollection values()

Description copied from interface: Double2DoubleMap

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 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()

containsValue

public boolean containsValue(java.lang.Object ov)

Specified by:

containsValue 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>

entrySet

public ObjectSet<java.util.Map.Entry<java.lang.Double,java.lang.Double>> entrySet()

Description copied from interface: Double2DoubleMap

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 Double2DoubleMap

Specified by:

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

Returns:

a set view of the mappings contained in this map.

See Also:

Map.entrySet()

hashCode

public int hashCode()

Specified by:

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

Overrides:

hashCode in class java.lang.Object

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 java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object