Package it.unimi.dsi.fastutil.ints
Class Int2ReferenceMaps.EmptyMap<V>
- java.lang.Object
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- it.unimi.dsi.fastutil.ints.AbstractInt2ReferenceFunction<V>
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- it.unimi.dsi.fastutil.ints.Int2ReferenceFunctions.EmptyFunction<V>
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- it.unimi.dsi.fastutil.ints.Int2ReferenceMaps.EmptyMap<V>
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- All Implemented Interfaces:
Function<java.lang.Integer,V>
,Int2ReferenceFunction<V>
,Int2ReferenceMap<V>
,java.io.Serializable
,java.lang.Cloneable
,java.util.function.Function<java.lang.Integer,V>
,java.util.function.IntFunction<V>
,java.util.Map<java.lang.Integer,V>
- Direct Known Subclasses:
Int2ReferenceSortedMaps.EmptySortedMap
- Enclosing class:
- Int2ReferenceMaps
public static class Int2ReferenceMaps.EmptyMap<V> extends Int2ReferenceFunctions.EmptyFunction<V> implements Int2ReferenceMap<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.ints.Int2ReferenceMap
Int2ReferenceMap.Entry<V>, Int2ReferenceMap.FastEntrySet<V>
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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(java.lang.Object v)
boolean
equals(java.lang.Object o)
void
forEach(java.util.function.BiConsumer<? super java.lang.Integer,? super V> consumer)
V
getOrDefault(int key, V defaultValue)
Returns the value associated by this function to the specified key, or give the specified value if not present.V
getOrDefault(java.lang.Object key, V defaultValue)
Deprecated.int
hashCode()
ObjectSet<Int2ReferenceMap.Entry<V>>
int2ReferenceEntrySet()
Returns a type-specific set view of the mappings contained in this map.boolean
isEmpty()
IntSet
keySet()
void
putAll(java.util.Map<? extends java.lang.Integer,? extends V> m)
java.lang.String
toString()
ReferenceCollection<V>
values()
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Methods inherited from class it.unimi.dsi.fastutil.ints.Int2ReferenceFunctions.EmptyFunction
clear, containsKey, defaultReturnValue, defaultReturnValue, get, size
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Methods inherited from interface it.unimi.dsi.fastutil.ints.Int2ReferenceFunction
andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, apply, compose, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, get, put, remove
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Methods inherited from interface it.unimi.dsi.fastutil.ints.Int2ReferenceMap
clear, compute, computeIfAbsent, computeIfAbsent, computeIfAbsentPartial, computeIfPresent, containsKey, containsKey, defaultReturnValue, defaultReturnValue, entrySet, get, merge, put, putIfAbsent, remove, remove, 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.Integer,V>
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getOrDefault
@Deprecated public V getOrDefault(java.lang.Object key, V defaultValue)
Deprecated.Description copied from interface:Int2ReferenceMap
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<java.lang.Integer,V>
- Specified by:
getOrDefault
in interfaceInt2ReferenceFunction<V>
- Specified by:
getOrDefault
in interfaceInt2ReferenceMap<V>
- Specified by:
getOrDefault
in interfacejava.util.Map<java.lang.Integer,V>
- 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 V getOrDefault(int key, V defaultValue)
Description copied from interface:Int2ReferenceFunction
Returns the value associated by this function to the specified key, or give the specified value if not present.- Specified by:
getOrDefault
in interfaceInt2ReferenceFunction<V>
- Specified by:
getOrDefault
in interfaceInt2ReferenceMap<V>
- Overrides:
getOrDefault
in classInt2ReferenceFunctions.EmptyFunction<V>
- 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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putAll
public void putAll(java.util.Map<? extends java.lang.Integer,? extends V> m)
- Specified by:
putAll
in interfacejava.util.Map<java.lang.Integer,V>
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int2ReferenceEntrySet
public ObjectSet<Int2ReferenceMap.Entry<V>> int2ReferenceEntrySet()
Description copied from interface:Int2ReferenceMap
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:
int2ReferenceEntrySet
in interfaceInt2ReferenceMap<V>
- Returns:
- a type-specific set view of the mappings contained in this map.
- See Also:
Map.entrySet()
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keySet
public IntSet keySet()
Description copied from interface:Int2ReferenceMap
- Specified by:
keySet
in interfaceInt2ReferenceMap<V>
- Specified by:
keySet
in interfacejava.util.Map<java.lang.Integer,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:Int2ReferenceMap
- Specified by:
values
in interfaceInt2ReferenceMap<V>
- Specified by:
values
in interfacejava.util.Map<java.lang.Integer,V>
- 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 java.lang.Integer,? super V> consumer)
- Specified by:
forEach
in interfaceInt2ReferenceMap<V>
- Specified by:
forEach
in interfacejava.util.Map<java.lang.Integer,V>
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clone
public java.lang.Object clone()
- Overrides:
clone
in classInt2ReferenceFunctions.EmptyFunction<V>
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isEmpty
public boolean isEmpty()
- Specified by:
isEmpty
in interfacejava.util.Map<java.lang.Integer,V>
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hashCode
public int hashCode()
- Specified by:
hashCode
in interfacejava.util.Map<java.lang.Integer,V>
- Overrides:
hashCode
in classInt2ReferenceFunctions.EmptyFunction<V>
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equals
public boolean equals(java.lang.Object o)
- Specified by:
equals
in interfacejava.util.Map<java.lang.Integer,V>
- Overrides:
equals
in classInt2ReferenceFunctions.EmptyFunction<V>
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toString
public java.lang.String toString()
- Overrides:
toString
in classInt2ReferenceFunctions.EmptyFunction<V>
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