Package it.unimi.dsi.fastutil.objects
Class Reference2LongMaps.EmptyMap<K>
- java.lang.Object
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- it.unimi.dsi.fastutil.objects.AbstractReference2LongFunction<K>
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- it.unimi.dsi.fastutil.objects.Reference2LongFunctions.EmptyFunction<K>
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- it.unimi.dsi.fastutil.objects.Reference2LongMaps.EmptyMap<K>
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- All Implemented Interfaces:
Function<K,java.lang.Long>
,Reference2LongFunction<K>
,Reference2LongMap<K>
,java.io.Serializable
,java.lang.Cloneable
,java.util.function.Function<K,java.lang.Long>
,java.util.function.ToLongFunction<K>
,java.util.Map<K,java.lang.Long>
- Direct Known Subclasses:
Reference2LongSortedMaps.EmptySortedMap
- Enclosing class:
- Reference2LongMaps
public static class Reference2LongMaps.EmptyMap<K> extends Reference2LongFunctions.EmptyFunction<K> implements Reference2LongMap<K>, 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.objects.Reference2LongMap
Reference2LongMap.Entry<K>, Reference2LongMap.FastEntrySet<K>
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Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description java.lang.Object
clone()
boolean
containsValue(long v)
Returnstrue
if this map maps one or more keys to the specified value.boolean
containsValue(java.lang.Object ov)
Deprecated.Please use the corresponding type-specific method instead.boolean
equals(java.lang.Object o)
void
forEach(java.util.function.BiConsumer<? super K,? super java.lang.Long> consumer)
long
getOrDefault(java.lang.Object key, long defaultValue)
Returns the value associated by this function to the specified key, or give the specified value if not present.java.lang.Long
getOrDefault(java.lang.Object key, java.lang.Long defaultValue)
Deprecated.int
hashCode()
boolean
isEmpty()
ReferenceSet<K>
keySet()
void
putAll(java.util.Map<? extends K,? extends java.lang.Long> m)
ObjectSet<Reference2LongMap.Entry<K>>
reference2LongEntrySet()
Returns a type-specific set view of the mappings contained in this map.java.lang.String
toString()
LongCollection
values()
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Methods inherited from class it.unimi.dsi.fastutil.objects.Reference2LongFunctions.EmptyFunction
clear, containsKey, defaultReturnValue, defaultReturnValue, getLong, size
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Methods inherited from interface java.util.Map
compute, computeIfAbsent, computeIfPresent, replaceAll
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Methods inherited from interface it.unimi.dsi.fastutil.objects.Reference2LongFunction
andThen, andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, applyAsLong, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, getLong, put, removeLong
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Methods inherited from interface it.unimi.dsi.fastutil.objects.Reference2LongMap
clear, computeIfAbsent, computeIfAbsent, computeLong, computeLongIfAbsent, computeLongIfAbsentPartial, computeLongIfPresent, containsKey, defaultReturnValue, defaultReturnValue, entrySet, get, merge, merge, mergeLong, mergeLong, mergeLong, 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(long v)
Description copied from interface:Reference2LongMap
Returnstrue
if this map maps one or more keys to the specified value.- Specified by:
containsValue
in interfaceReference2LongMap<K>
- See Also:
Map.containsValue(Object)
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getOrDefault
@Deprecated public java.lang.Long getOrDefault(java.lang.Object key, java.lang.Long defaultValue)
Deprecated.Description copied from interface:Reference2LongMap
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,java.lang.Long>
- Specified by:
getOrDefault
in interfacejava.util.Map<K,java.lang.Long>
- Specified by:
getOrDefault
in interfaceReference2LongFunction<K>
- Specified by:
getOrDefault
in interfaceReference2LongMap<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
public long getOrDefault(java.lang.Object key, long defaultValue)
Description copied from interface:Reference2LongFunction
Returns the value associated by this function to the specified key, or give the specified value if not present.- Specified by:
getOrDefault
in interfaceReference2LongFunction<K>
- Specified by:
getOrDefault
in interfaceReference2LongMap<K>
- Overrides:
getOrDefault
in classReference2LongFunctions.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 public boolean containsValue(java.lang.Object ov)
Deprecated.Please use the corresponding type-specific method instead.- Specified by:
containsValue
in interfacejava.util.Map<K,java.lang.Long>
- Specified by:
containsValue
in interfaceReference2LongMap<K>
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putAll
public void putAll(java.util.Map<? extends K,? extends java.lang.Long> m)
- Specified by:
putAll
in interfacejava.util.Map<K,java.lang.Long>
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reference2LongEntrySet
public ObjectSet<Reference2LongMap.Entry<K>> reference2LongEntrySet()
Description copied from interface:Reference2LongMap
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:
reference2LongEntrySet
in interfaceReference2LongMap<K>
- Returns:
- a type-specific set view of the mappings contained in this map.
- See Also:
Map.entrySet()
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keySet
public ReferenceSet<K> keySet()
Description copied from interface:Reference2LongMap
- Specified by:
keySet
in interfacejava.util.Map<K,java.lang.Long>
- Specified by:
keySet
in interfaceReference2LongMap<K>
- Returns:
- a set view of the keys contained in this map.
- See Also:
Map.keySet()
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values
public LongCollection values()
Description copied from interface:Reference2LongMap
- Specified by:
values
in interfacejava.util.Map<K,java.lang.Long>
- Specified by:
values
in interfaceReference2LongMap<K>
- Returns:
- a set view of the values contained in this map.
- See Also:
Map.values()
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forEach
public void forEach(java.util.function.BiConsumer<? super K,? super java.lang.Long> consumer)
- Specified by:
forEach
in interfacejava.util.Map<K,java.lang.Long>
- Specified by:
forEach
in interfaceReference2LongMap<K>
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clone
public java.lang.Object clone()
- Overrides:
clone
in classReference2LongFunctions.EmptyFunction<K>
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isEmpty
public boolean isEmpty()
- Specified by:
isEmpty
in interfacejava.util.Map<K,java.lang.Long>
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hashCode
public int hashCode()
- Specified by:
hashCode
in interfacejava.util.Map<K,java.lang.Long>
- Overrides:
hashCode
in classReference2LongFunctions.EmptyFunction<K>
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equals
public boolean equals(java.lang.Object o)
- Specified by:
equals
in interfacejava.util.Map<K,java.lang.Long>
- Overrides:
equals
in classReference2LongFunctions.EmptyFunction<K>
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toString
public java.lang.String toString()
- Overrides:
toString
in classReference2LongFunctions.EmptyFunction<K>
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