Package it.unimi.dsi.fastutil.longs
Class Long2ReferenceMaps.EmptyMap<V>
- java.lang.Object
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- it.unimi.dsi.fastutil.longs.AbstractLong2ReferenceFunction<V>
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- it.unimi.dsi.fastutil.longs.Long2ReferenceFunctions.EmptyFunction<V>
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- it.unimi.dsi.fastutil.longs.Long2ReferenceMaps.EmptyMap<V>
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- All Implemented Interfaces:
Function<java.lang.Long,V>
,Long2ReferenceFunction<V>
,Long2ReferenceMap<V>
,java.io.Serializable
,java.lang.Cloneable
,java.util.function.Function<java.lang.Long,V>
,java.util.function.LongFunction<V>
,java.util.Map<java.lang.Long,V>
- Direct Known Subclasses:
Long2ReferenceSortedMaps.EmptySortedMap
- Enclosing class:
- Long2ReferenceMaps
public static class Long2ReferenceMaps.EmptyMap<V> extends Long2ReferenceFunctions.EmptyFunction<V> implements Long2ReferenceMap<V>, 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
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Nested Class Summary
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Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.longs.Long2ReferenceMap
Long2ReferenceMap.Entry<V>, Long2ReferenceMap.FastEntrySet<V>
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.Object
clone()
boolean
containsValue(java.lang.Object v)
boolean
equals(java.lang.Object o)
int
hashCode()
boolean
isEmpty()
LongSet
keySet()
ObjectSet<Long2ReferenceMap.Entry<V>>
long2ReferenceEntrySet()
Returns a type-specific set view of the mappings contained in this map.void
putAll(java.util.Map<? extends java.lang.Long,? extends V> m)
java.lang.String
toString()
ReferenceCollection<V>
values()
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Methods inherited from class it.unimi.dsi.fastutil.longs.Long2ReferenceFunctions.EmptyFunction
clear, containsKey, defaultReturnValue, defaultReturnValue, get, size
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Methods inherited from interface it.unimi.dsi.fastutil.longs.Long2ReferenceFunction
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.Long2ReferenceMap
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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Method Detail
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containsValue
public boolean containsValue(java.lang.Object v)
- Specified by:
containsValue
in interfacejava.util.Map<java.lang.Long,V>
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putAll
public void putAll(java.util.Map<? extends java.lang.Long,? extends V> m)
- Specified by:
putAll
in interfacejava.util.Map<java.lang.Long,V>
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long2ReferenceEntrySet
public ObjectSet<Long2ReferenceMap.Entry<V>> long2ReferenceEntrySet()
Description copied from interface:Long2ReferenceMap
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:
long2ReferenceEntrySet
in interfaceLong2ReferenceMap<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:Long2ReferenceMap
Note that this specification strengthens the one given in
Map.keySet()
.- Specified by:
keySet
in interfaceLong2ReferenceMap<V>
- Specified by:
keySet
in interfacejava.util.Map<java.lang.Long,V>
- Returns:
- a set view of the keys contained in this map.
- See Also:
Map.keySet()
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values
public ReferenceCollection<V> values()
Description copied from interface:Long2ReferenceMap
Note that this specification strengthens the one given in
Map.values()
.- Specified by:
values
in interfaceLong2ReferenceMap<V>
- Specified by:
values
in interfacejava.util.Map<java.lang.Long,V>
- Returns:
- a set view of the values contained in this map.
- See Also:
Map.values()
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clone
public java.lang.Object clone()
- Overrides:
clone
in classLong2ReferenceFunctions.EmptyFunction<V>
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isEmpty
public boolean isEmpty()
- Specified by:
isEmpty
in interfacejava.util.Map<java.lang.Long,V>
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hashCode
public int hashCode()
- Specified by:
hashCode
in interfacejava.util.Map<java.lang.Long,V>
- Overrides:
hashCode
in classLong2ReferenceFunctions.EmptyFunction<V>
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equals
public boolean equals(java.lang.Object o)
- Specified by:
equals
in interfacejava.util.Map<java.lang.Long,V>
- Overrides:
equals
in classLong2ReferenceFunctions.EmptyFunction<V>
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toString
public java.lang.String toString()
- Overrides:
toString
in classLong2ReferenceFunctions.EmptyFunction<V>
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