Package it.unimi.dsi.fastutil.objects
Class Object2DoubleMaps.EmptyMap<K>
- java.lang.Object
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- it.unimi.dsi.fastutil.objects.AbstractObject2DoubleFunction<K>
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- it.unimi.dsi.fastutil.objects.Object2DoubleFunctions.EmptyFunction<K>
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- it.unimi.dsi.fastutil.objects.Object2DoubleMaps.EmptyMap<K>
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- All Implemented Interfaces:
Function<K,Double>
,Object2DoubleFunction<K>
,Object2DoubleMap<K>
,Serializable
,Cloneable
,Function<K,Double>
,ToDoubleFunction<K>
,Map<K,Double>
- Direct Known Subclasses:
Object2DoubleSortedMaps.EmptySortedMap
- Enclosing class:
- Object2DoubleMaps
public static class Object2DoubleMaps.EmptyMap<K> extends Object2DoubleFunctions.EmptyFunction<K> implements Object2DoubleMap<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
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Nested Class Summary
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Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.objects.Object2DoubleMap
Object2DoubleMap.Entry<K>, Object2DoubleMap.FastEntrySet<K>
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Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description Object
clone()
boolean
containsValue(double v)
Returnstrue
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)
int
hashCode()
boolean
isEmpty()
ObjectSet<K>
keySet()
ObjectSet<Object2DoubleMap.Entry<K>>
object2DoubleEntrySet()
Returns a type-specific set view of the mappings contained in this map.void
putAll(Map<? extends K,? extends Double> m)
String
toString()
DoubleCollection
values()
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Methods inherited from class it.unimi.dsi.fastutil.objects.Object2DoubleFunctions.EmptyFunction
clear, containsKey, defaultReturnValue, defaultReturnValue, getDouble, size
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Methods inherited from interface java.util.Map
compute, computeIfAbsent, computeIfPresent, forEach, replaceAll
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Methods inherited from interface it.unimi.dsi.fastutil.objects.Object2DoubleFunction
applyAsDouble, getDouble, put, removeDouble
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Methods inherited from interface it.unimi.dsi.fastutil.objects.Object2DoubleMap
clear, computeDouble, computeDoubleIfAbsent, computeDoubleIfAbsentPartial, computeDoubleIfPresent, containsKey, defaultReturnValue, defaultReturnValue, entrySet, get, getOrDefault, getOrDefault, merge, mergeDouble, put, putIfAbsent, putIfAbsent, remove, remove, remove, replace, replace, replace, replace, size
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Method Detail
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containsValue
public boolean containsValue(double v)
Description copied from interface:Object2DoubleMap
Returnstrue
if this map maps one or more keys to the specified value.- Specified by:
containsValue
in interfaceObject2DoubleMap<K>
- See Also:
Map.containsValue(Object)
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containsValue
@Deprecated public boolean containsValue(Object ov)
Deprecated.Please use the corresponding type-specific method instead.- Specified by:
containsValue
in interfaceMap<K,Double>
- Specified by:
containsValue
in interfaceObject2DoubleMap<K>
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object2DoubleEntrySet
public ObjectSet<Object2DoubleMap.Entry<K>> object2DoubleEntrySet()
Description copied from interface:Object2DoubleMap
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 anObjectSet
of type-specific entries (the latter makes it possible to access keys and values with type-specific methods).- Specified by:
object2DoubleEntrySet
in interfaceObject2DoubleMap<K>
- Returns:
- a type-specific set view of the mappings contained in this map.
- See Also:
Map.entrySet()
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keySet
public ObjectSet<K> keySet()
Description copied from interface:Object2DoubleMap
Note that this specification strengthens the one given in
Map.keySet()
.- Specified by:
keySet
in interfaceMap<K,Double>
- Specified by:
keySet
in interfaceObject2DoubleMap<K>
- Returns:
- a set view of the keys contained in this map.
- See Also:
Map.keySet()
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values
public DoubleCollection values()
Description copied from interface:Object2DoubleMap
Note that this specification strengthens the one given in
Map.values()
.- Specified by:
values
in interfaceMap<K,Double>
- Specified by:
values
in interfaceObject2DoubleMap<K>
- Returns:
- a set view of the values contained in this map.
- See Also:
Map.values()
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clone
public Object clone()
- Overrides:
clone
in classObject2DoubleFunctions.EmptyFunction<K>
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hashCode
public int hashCode()
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equals
public boolean equals(Object o)
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toString
public String toString()
- Overrides:
toString
in classObject2DoubleFunctions.EmptyFunction<K>
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