Package it.unimi.dsi.fastutil.objects
Class Reference2DoubleMaps.EmptyMap<K>
java.lang.Object
it.unimi.dsi.fastutil.objects.AbstractReference2DoubleFunction<K>
it.unimi.dsi.fastutil.objects.Reference2DoubleFunctions.EmptyFunction<K>
it.unimi.dsi.fastutil.objects.Reference2DoubleMaps.EmptyMap<K>
- All Implemented Interfaces:
Function<K,Double>
,Reference2DoubleFunction<K>
,Reference2DoubleMap<K>
,Serializable
,Cloneable
,Function<K,Double>
,ToDoubleFunction<K>
,Map<K,Double>
- Direct Known Subclasses:
Reference2DoubleSortedMaps.EmptySortedMap
- Enclosing class:
- Reference2DoubleMaps
public static class Reference2DoubleMaps.EmptyMap<K> extends Reference2DoubleFunctions.EmptyFunction<K> implements Reference2DoubleMap<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
Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.objects.Reference2DoubleMap
Reference2DoubleMap.Entry<K>, Reference2DoubleMap.FastEntrySet<K>
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Method Summary
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)
void
forEach(BiConsumer<? super K,? super Double> consumer)
double
getOrDefault(Object key, double defaultValue)
Returns the value associated by this function to the specified key, or give the specified value if not present.Double
getOrDefault(Object key, Double defaultValue)
Deprecated.int
hashCode()
boolean
isEmpty()
ReferenceSet<K>
keySet()
void
putAll(Map<? extends K,? extends Double> m)
ObjectSet<Reference2DoubleMap.Entry<K>>
reference2DoubleEntrySet()
Returns a type-specific set view of the mappings contained in this map.String
toString()
DoubleCollection
values()
Methods inherited from class it.unimi.dsi.fastutil.objects.Reference2DoubleFunctions.EmptyFunction
clear, containsKey, defaultReturnValue, defaultReturnValue, getDouble, size
Methods inherited from interface java.util.Map
compute, computeIfAbsent, computeIfPresent, replaceAll
Methods inherited from interface it.unimi.dsi.fastutil.objects.Reference2DoubleFunction
andThen, andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, applyAsDouble, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, getDouble, put, removeDouble
Methods inherited from interface it.unimi.dsi.fastutil.objects.Reference2DoubleMap
clear, computeDouble, computeDoubleIfAbsent, computeDoubleIfAbsentPartial, computeDoubleIfPresent, computeIfAbsent, computeIfAbsent, containsKey, defaultReturnValue, defaultReturnValue, entrySet, get, merge, merge, mergeDouble, mergeDouble, mergeDouble, put, putIfAbsent, putIfAbsent, remove, remove, remove, replace, replace, replace, replace, size
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Method Details
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containsValue
public boolean containsValue(double v)Description copied from interface:Reference2DoubleMap
Returnstrue
if this map maps one or more keys to the specified value.- Specified by:
containsValue
in interfaceReference2DoubleMap<K>
- See Also:
Map.containsValue(Object)
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getOrDefault
Deprecated.Description copied from interface:Reference2DoubleMap
Returns the value associated by this function to the specified key, or give the specified value if not present.This default implementation just delegates to the corresponding
Map
method.- Specified by:
getOrDefault
in interfaceFunction<K,Double>
- Specified by:
getOrDefault
in interfaceMap<K,Double>
- Specified by:
getOrDefault
in interfaceReference2DoubleFunction<K>
- Specified by:
getOrDefault
in interfaceReference2DoubleMap<K>
- Parameters:
key
- the key.defaultValue
- the default value to return if not present.- Returns:
- the corresponding value, or
defaultValue
if no value was present for the given key. - See Also:
Map.getOrDefault(Object, Object)
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getOrDefault
Description copied from interface:Reference2DoubleFunction
Returns the value associated by this function to the specified key, or give the specified value if not present.- Specified by:
getOrDefault
in interfaceReference2DoubleFunction<K>
- Specified by:
getOrDefault
in interfaceReference2DoubleMap<K>
- Overrides:
getOrDefault
in classReference2DoubleFunctions.EmptyFunction<K>
- Parameters:
key
- the key.defaultValue
- the value to return if not present.- Returns:
- the corresponding value, or
defaultValue
if no value was present for the given key. - See Also:
Function.getOrDefault(Object, Object)
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containsValue
Deprecated.Please use the corresponding type-specific method instead.- Specified by:
containsValue
in interfaceMap<K,Double>
- Specified by:
containsValue
in interfaceReference2DoubleMap<K>
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putAll
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reference2DoubleEntrySet
Description copied from interface:Reference2DoubleMap
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:
reference2DoubleEntrySet
in interfaceReference2DoubleMap<K>
- Returns:
- a type-specific set view of the mappings contained in this map.
- See Also:
Map.entrySet()
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keySet
Description copied from interface:Reference2DoubleMap
- Specified by:
keySet
in interfaceMap<K,Double>
- Specified by:
keySet
in interfaceReference2DoubleMap<K>
- Returns:
- a set view of the keys contained in this map.
- See Also:
Map.keySet()
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values
Description copied from interface:Reference2DoubleMap
- Specified by:
values
in interfaceMap<K,Double>
- Specified by:
values
in interfaceReference2DoubleMap<K>
- Returns:
- a set view of the values contained in this map.
- See Also:
Map.values()
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forEach
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clone
- Overrides:
clone
in classReference2DoubleFunctions.EmptyFunction<K>
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isEmpty
public boolean isEmpty() -
hashCode
public int hashCode() -
equals
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toString
- Overrides:
toString
in classReference2DoubleFunctions.EmptyFunction<K>
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