Package it.unimi.dsi.fastutil.longs
Class Long2ObjectMaps.EmptyMap<V>
- java.lang.Object
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- it.unimi.dsi.fastutil.longs.AbstractLong2ObjectFunction<V>
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- it.unimi.dsi.fastutil.longs.Long2ObjectFunctions.EmptyFunction<V>
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- it.unimi.dsi.fastutil.longs.Long2ObjectMaps.EmptyMap<V>
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- All Implemented Interfaces:
Function<Long,V>
,Long2ObjectFunction<V>
,Long2ObjectMap<V>
,Serializable
,Cloneable
,Function<Long,V>
,LongFunction<V>
,Map<Long,V>
- Direct Known Subclasses:
Long2ObjectSortedMaps.EmptySortedMap
- Enclosing class:
- Long2ObjectMaps
public static class Long2ObjectMaps.EmptyMap<V> extends Long2ObjectFunctions.EmptyFunction<V> implements Long2ObjectMap<V>, 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.longs.Long2ObjectMap
Long2ObjectMap.Entry<V>, Long2ObjectMap.FastEntrySet<V>
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Object
clone()
boolean
containsValue(Object v)
boolean
equals(Object o)
int
hashCode()
boolean
isEmpty()
LongSet
keySet()
ObjectSet<Long2ObjectMap.Entry<V>>
long2ObjectEntrySet()
Returns a type-specific set view of the mappings contained in this map.void
putAll(Map<? extends Long,? extends V> m)
String
toString()
ObjectCollection<V>
values()
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Methods inherited from class it.unimi.dsi.fastutil.longs.Long2ObjectFunctions.EmptyFunction
clear, containsKey, defaultReturnValue, defaultReturnValue, get, size
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Methods inherited from interface it.unimi.dsi.fastutil.longs.Long2ObjectFunction
andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, apply, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, get, put, remove
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Methods inherited from interface it.unimi.dsi.fastutil.longs.Long2ObjectMap
clear, compute, compute, computeIfAbsent, computeIfAbsent, computeIfAbsentPartial, computeIfPresent, computeIfPresent, containsKey, containsKey, defaultReturnValue, defaultReturnValue, entrySet, get, getOrDefault, getOrDefault, merge, merge, put, putIfAbsent, putIfAbsent, remove, remove, remove, replace, replace, replace, replace, size
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Methods inherited from interface java.util.Map
forEach, replaceAll
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Method Detail
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containsValue
public boolean containsValue(Object v)
- Specified by:
containsValue
in interfaceMap<Long,V>
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long2ObjectEntrySet
public ObjectSet<Long2ObjectMap.Entry<V>> long2ObjectEntrySet()
Description copied from interface:Long2ObjectMap
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:
long2ObjectEntrySet
in interfaceLong2ObjectMap<V>
- Returns:
- a type-specific set view of the mappings contained in this map.
- See Also:
Map.entrySet()
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keySet
public LongSet keySet()
Description copied from interface:Long2ObjectMap
Note that this specification strengthens the one given in
Map.keySet()
.- Specified by:
keySet
in interfaceLong2ObjectMap<V>
- Specified by:
keySet
in interfaceMap<Long,V>
- Returns:
- a set view of the keys contained in this map.
- See Also:
Map.keySet()
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values
public ObjectCollection<V> values()
Description copied from interface:Long2ObjectMap
Note that this specification strengthens the one given in
Map.values()
.- Specified by:
values
in interfaceLong2ObjectMap<V>
- Specified by:
values
in interfaceMap<Long,V>
- 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 classLong2ObjectFunctions.EmptyFunction<V>
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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 classLong2ObjectFunctions.EmptyFunction<V>
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