Package it.unimi.dsi.fastutil.longs

Class Long2DoubleMaps.UnmodifiableMap

java.lang.Object

it.unimi.dsi.fastutil.longs.AbstractLong2DoubleFunction

it.unimi.dsi.fastutil.longs.Long2DoubleFunctions.UnmodifiableFunction

it.unimi.dsi.fastutil.longs.Long2DoubleMaps.UnmodifiableMap

All Implemented Interfaces:

Function<Long,Double>, Long2DoubleFunction, Long2DoubleMap, Serializable, Function<Long,Double>, LongToDoubleFunction, Map<Long,Double>

Direct Known Subclasses:

Long2DoubleSortedMaps.UnmodifiableSortedMap

Enclosing class:

Long2DoubleMaps

public static class Long2DoubleMaps.UnmodifiableMap
extends Long2DoubleFunctions.UnmodifiableFunction
implements Long2DoubleMap, Serializable

An unmodifiable wrapper class for maps.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.longs.Long2DoubleMap

Long2DoubleMap.Entry, Long2DoubleMap.FastEntrySet

Method Summary

Modifier and Type	Method	Description
double	compute(long key, BiFunction<? super Long,? super Double,? extends Double> remappingFunction)	Attempts to compute a mapping for the specified key and its current mapped value (or null if there is no current mapping).
Double	compute(Long key, BiFunction<? super Long,? super Double,? extends Double> remappingFunction)	Deprecated. Please use the corresponding type-specific method instead.
double	computeIfAbsent(long key, Long2DoubleFunction mappingFunction)	If the specified key is not already associated with a value, attempts to compute its value using the given mapping function and enters it into this map, unless the key is not present in the given mapping function.
double	computeIfAbsent(long key, LongToDoubleFunction mappingFunction)	If the specified key is not already associated with a value, attempts to compute its value using the given mapping function and enters it into this map.
Double	computeIfAbsent(Long key, Function<? super Long,? extends Double> mappingFunction)	Deprecated. Please use the corresponding type-specific method instead.
double	computeIfAbsentNullable(long key, LongFunction<? extends Double> mappingFunction)	If the specified key is not already associated with a value, attempts to compute its value using the given mapping function and enters it into this map unless it is null.
double	computeIfPresent(long key, BiFunction<? super Long,? super Double,? extends Double> remappingFunction)	If the value for the specified key is present, attempts to compute a new mapping given the key and its current mapped value.
Double	computeIfPresent(Long key, BiFunction<? super Long,? super Double,? extends Double> remappingFunction)	Deprecated. Please use the corresponding type-specific method instead.
boolean	containsValue(double v)	Returns true 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.
ObjectSet<Map.Entry<Long,Double>>	entrySet()	Deprecated. Please use the corresponding type-specific method instead.
boolean	equals(Object o)
void	forEach(BiConsumer<? super Long,? super Double> action)
double	getOrDefault(long 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. Please use the corresponding type-specific method instead.
int	hashCode()
boolean	isEmpty()
LongSet	keySet()
ObjectSet<Long2DoubleMap.Entry>	long2DoubleEntrySet()	Returns a type-specific set view of the mappings contained in this map.
double	merge(long key, double value, BiFunction<? super Double,? super Double,? extends Double> remappingFunction)	If the specified key is not already associated with a value, associates it with the given value.
Double	merge(Long key, Double value, BiFunction<? super Double,? super Double,? extends Double> remappingFunction)	Deprecated. Please use the corresponding type-specific method instead.
void	putAll(Map<? extends Long,? extends Double> m)
double	putIfAbsent(long key, double value)	If the specified key is not already associated with a value, associates it with the given value and returns the default return value, else returns the current value.
Double	putIfAbsent(Long key, Double value)	Deprecated. Please use the corresponding type-specific method instead.
boolean	remove(long key, double value)	Removes the entry for the specified key only if it is currently mapped to the specified value.
boolean	remove(Object key, Object value)	Deprecated. Please use the corresponding type-specific method instead.
double	replace(long key, double value)	Replaces the entry for the specified key only if it is currently mapped to some value.
boolean	replace(long key, double oldValue, double newValue)	Replaces the entry for the specified key only if currently mapped to the specified value.
Double	replace(Long key, Double value)	Deprecated. Please use the corresponding type-specific method instead.
boolean	replace(Long key, Double oldValue, Double newValue)	Deprecated. Please use the corresponding type-specific method instead.
void	replaceAll(BiFunction<? super Long,? super Double,? extends Double> function)
DoubleCollection	values()

Methods inherited from class it.unimi.dsi.fastutil.longs.Long2DoubleFunctions.UnmodifiableFunction

clear, containsKey, defaultReturnValue, defaultReturnValue, get, get, put, put, remove, remove, size, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.Function

apply

Methods inherited from interface it.unimi.dsi.fastutil.longs.Long2DoubleFunction

andThen, andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, applyAsDouble, compose, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, get, put, remove

Methods inherited from interface it.unimi.dsi.fastutil.longs.Long2DoubleMap

clear, computeIfAbsentPartial, containsKey, containsKey, defaultReturnValue, defaultReturnValue, get, mergeDouble, mergeDouble, put, remove, size

Method Details

containsValue

public boolean containsValue(double v)

Description copied from interface: Long2DoubleMap

Returns true if this map maps one or more keys to the specified value.

Specified by:

containsValue in interface Long2DoubleMap

See Also:

• Map.containsValue(Object)

containsValue

@Deprecated
public boolean containsValue(Object ov)

Deprecated.

Please use the corresponding type-specific method instead.

Specified by:

containsValue in interface Long2DoubleMap

Specified by:

containsValue in interface Map<Long,Double>

putAll

public void putAll(Map<? extends Long,? extends Double> m)

Specified by:

putAll in interface Map<Long,Double>

long2DoubleEntrySet

public ObjectSet<Long2DoubleMap.Entry> long2DoubleEntrySet()

Description copied from interface: Long2DoubleMap

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 an ObjectSet of type-specific entries (the latter makes it possible to access keys and values with type-specific methods).

Specified by:

long2DoubleEntrySet in interface Long2DoubleMap

Returns:

a type-specific set view of the mappings contained in this map.

See Also:

• Map.entrySet()

entrySet

@Deprecated
public ObjectSet<Map.Entry<Long,Double>> entrySet()

Deprecated.

Please use the corresponding type-specific method instead.

Returns a set view of the mappings contained in this map.

Specified by:

entrySet in interface Long2DoubleMap

Specified by:

entrySet in interface Map<Long,Double>

Returns:

a set view of the mappings contained in this map.

See Also:

• Map.entrySet()

keySet

public LongSet keySet()

Description copied from interface: Long2DoubleMap

Specified by:

keySet in interface Long2DoubleMap

Specified by:

keySet in interface Map<Long,Double>

Returns:

a set view of the keys contained in this map.

See Also:

• Map.keySet()

values

public DoubleCollection values()

Description copied from interface: Long2DoubleMap

Specified by:

values in interface Long2DoubleMap

Specified by:

values in interface Map<Long,Double>

Returns:

a set view of the values contained in this map.

See Also:

• Map.values()

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<Long,Double>

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<Long,Double>

Overrides:

hashCode in class Long2DoubleFunctions.UnmodifiableFunction

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<Long,Double>

Overrides:

equals in class Long2DoubleFunctions.UnmodifiableFunction

getOrDefault

public double getOrDefault(long key,
 double defaultValue)

Description copied from interface: Long2DoubleFunction

Returns the value associated by this function to the specified key, or give the specified value if not present.

Specified by:

getOrDefault in interface Long2DoubleFunction

Specified by:

getOrDefault in interface Long2DoubleMap

Overrides:

getOrDefault in class Long2DoubleFunctions.UnmodifiableFunction

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)

forEach

public void forEach(BiConsumer<? super Long,? super Double> action)

Specified by:

forEach in interface Long2DoubleMap

Specified by:

forEach in interface Map<Long,Double>

replaceAll

public void replaceAll(BiFunction<? super Long,? super Double,? extends Double> function)

Specified by:

replaceAll in interface Map<Long,Double>

putIfAbsent

public double putIfAbsent(long key,
 double value)

Description copied from interface: Long2DoubleMap

If the specified key is not already associated with a value, associates it with the given value and returns the default return value, else returns the current value.

Specified by:

putIfAbsent in interface Long2DoubleMap

Parameters:

key - key with which the specified value is to be associated.

value - value to be associated with the specified key.

Returns:

the previous value associated with the specified key, or the default return value if there was no mapping for the key.

See Also:

• Map.putIfAbsent(Object, Object)

remove

public boolean remove(long key,
 double value)

Description copied from interface: Long2DoubleMap

Removes the entry for the specified key only if it is currently mapped to the specified value.

Specified by:

remove in interface Long2DoubleMap

Parameters:

key - key with which the specified value is associated.

value - value expected to be associated with the specified key.

Returns:

true if the value was removed.

See Also:

• Map.remove(Object, Object)

replace

public double replace(long key,
 double value)

Description copied from interface: Long2DoubleMap

Replaces the entry for the specified key only if it is currently mapped to some value.

Specified by:

replace in interface Long2DoubleMap

Parameters:

key - key with which the specified value is associated.

value - value to be associated with the specified key.

Returns:

the previous value associated with the specified key, or the default return value if there was no mapping for the key.

See Also:

• Map.replace(Object, Object)

replace

public boolean replace(long key,
 double oldValue,
 double newValue)

Description copied from interface: Long2DoubleMap

Replaces the entry for the specified key only if currently mapped to the specified value.

Specified by:

replace in interface Long2DoubleMap

Parameters:

key - key with which the specified value is associated.

oldValue - value expected to be associated with the specified key.

newValue - value to be associated with the specified key.

Returns:

true if the value was replaced.

See Also:

• Map.replace(Object, Object, Object)

computeIfAbsent

public double computeIfAbsent(long key,
 LongToDoubleFunction mappingFunction)

Description copied from interface: Long2DoubleMap

If the specified key is not already associated with a value, attempts to compute its value using the given mapping function and enters it into this map.

Note that contrarily to the default computeIfAbsent(), it is not possible to not add a value for a given key, since the mappingFunction cannot return null. If such a behavior is needed, please use the corresponding nullable version.

Specified by:

computeIfAbsent in interface Long2DoubleMap

Parameters:

key - key with which the specified value is to be associated.

mappingFunction - the function to compute a value.

Returns:

the current (existing or computed) value associated with the specified key.

See Also:

• Map.computeIfAbsent(Object, java.util.function.Function)

computeIfAbsentNullable

public double computeIfAbsentNullable(long key,
 LongFunction<? extends Double> mappingFunction)

Description copied from interface: Long2DoubleMap

If the specified key is not already associated with a value, attempts to compute its value using the given mapping function and enters it into this map unless it is null.

Note that this version of computeIfAbsent() should be used only if you plan to return null in the mapping function.

Specified by:

computeIfAbsentNullable in interface Long2DoubleMap

Parameters:

key - key with which the specified value is to be associated.

mappingFunction - the function to compute a value.

Returns:

the current (existing or computed) value associated with the specified key, or the default return value if the computed value is null.

See Also:

• Map.computeIfAbsent(Object, java.util.function.Function)

computeIfAbsent

public double computeIfAbsent(long key,
 Long2DoubleFunction mappingFunction)

Description copied from interface: Long2DoubleMap

If the specified key is not already associated with a value, attempts to compute its value using the given mapping function and enters it into this map, unless the key is not present in the given mapping function.

This version of computeIfAbsent() uses a type-specific version of fastutil's Function. Since Function has a containsKey() method, it is possible to avoid adding a key by having containsKey() return false for that key.

Specified by:

computeIfAbsent in interface Long2DoubleMap

Parameters:

key - key with which the specified value is to be associated.

mappingFunction - the function to compute a value.

Returns:

the current (existing or computed) value associated with the specified key.

See Also:

• Map.computeIfAbsent(Object, java.util.function.Function)

computeIfPresent

public double computeIfPresent(long key,
 BiFunction<? super Long,? super Double,? extends Double> remappingFunction)

Description copied from interface: Long2DoubleMap

If the value for the specified key is present, attempts to compute a new mapping given the key and its current mapped value.

Specified by:

computeIfPresent in interface Long2DoubleMap

Parameters:

key - key with which the specified value is to be associated.

remappingFunction - the function to compute a value.

Returns:

the new value associated with the specified key, or the default return value if none.

See Also:

• Map.computeIfPresent(Object, java.util.function.BiFunction)

compute

public double compute(long key,
 BiFunction<? super Long,? super Double,? extends Double> remappingFunction)

Description copied from interface: Long2DoubleMap

Attempts to compute a mapping for the specified key and its current mapped value (or null if there is no current mapping).

If the function returns null, the mapping is removed (or remains absent if initially absent). If the function itself throws an (unchecked) exception, the exception is rethrown, and the current mapping is left unchanged.

Specified by:

compute in interface Long2DoubleMap

Parameters:

key - key with which the specified value is to be associated.

remappingFunction - the function to compute a value.

Returns:

the new value associated with the specified key, or the default return value if none.

See Also:

• Map.compute(Object, java.util.function.BiFunction)

merge

public double merge(long key,
 double value,
 BiFunction<? super Double,? super Double,? extends Double> remappingFunction)

Description copied from interface: Long2DoubleMap

If the specified key is not already associated with a value, associates it with the given value. Otherwise, replaces the associated value with the results of the given remapping function, or removes if the result is null.

Specified by:

merge in interface Long2DoubleMap

Parameters:

key - key with which the resulting value is to be associated.

value - the value to be merged with the existing value associated with the key or, if no existing value is associated with the key, to be associated with the key.

remappingFunction - the function to recompute a value if present.

Returns:

the new value associated with the specified key, or the default return value if no value is associated with the key.

See Also:

• Map.merge(Object, Object, java.util.function.BiFunction)

getOrDefault

@Deprecated
public Double getOrDefault(Object key,
 Double defaultValue)

Deprecated.

Please use the corresponding type-specific method instead.

Returns the value associated by this function to the specified key, or give the specified value if not present.

Specified by:

getOrDefault in interface Function<Long,Double>

Specified by:

getOrDefault in interface Long2DoubleFunction

Specified by:

getOrDefault in interface Long2DoubleMap

Specified by:

getOrDefault in interface Map<Long,Double>

Overrides:

getOrDefault in class Long2DoubleFunctions.UnmodifiableFunction

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)

remove

@Deprecated
public boolean remove(Object key,
 Object value)

Deprecated.

Please use the corresponding type-specific method instead.

This default implementation just delegates to the corresponding Map method.

Specified by:

remove in interface Long2DoubleMap

Specified by:

remove in interface Map<Long,Double>

replace

@Deprecated
public Double replace(Long key,
 Double value)

Deprecated.

Please use the corresponding type-specific method instead.

This default implementation just delegates to the corresponding Map method.

Specified by:

replace in interface Long2DoubleMap

Specified by:

replace in interface Map<Long,Double>

replace

@Deprecated
public boolean replace(Long key,
 Double oldValue,
 Double newValue)

Deprecated.

Please use the corresponding type-specific method instead.

This default implementation just delegates to the corresponding Map method.

Specified by:

replace in interface Long2DoubleMap

Specified by:

replace in interface Map<Long,Double>

putIfAbsent

@Deprecated
public Double putIfAbsent(Long key,
 Double value)

Deprecated.

Please use the corresponding type-specific method instead.

This default implementation just delegates to the corresponding Map method.

Specified by:

putIfAbsent in interface Long2DoubleMap

Specified by:

putIfAbsent in interface Map<Long,Double>

computeIfAbsent

@Deprecated
public Double computeIfAbsent(Long key,
 Function<? super Long,? extends Double> mappingFunction)

Deprecated.

Please use the corresponding type-specific method instead.

This default implementation just delegates to the corresponding Map method.

Specified by:

computeIfAbsent in interface Long2DoubleMap

Specified by:

computeIfAbsent in interface Map<Long,Double>

computeIfPresent

@Deprecated
public Double computeIfPresent(Long key,
 BiFunction<? super Long,? super Double,? extends Double> remappingFunction)

Deprecated.

Please use the corresponding type-specific method instead.

This default implementation just delegates to the corresponding Map method.

Specified by:

computeIfPresent in interface Long2DoubleMap

Specified by:

computeIfPresent in interface Map<Long,Double>

compute

@Deprecated
public Double compute(Long key,
 BiFunction<? super Long,? super Double,? extends Double> remappingFunction)

Deprecated.

Please use the corresponding type-specific method instead.

This default implementation just delegates to the corresponding Map method.

Specified by:

compute in interface Long2DoubleMap

Specified by:

compute in interface Map<Long,Double>

merge

@Deprecated
public Double merge(Long key,
 Double value,
 BiFunction<? super Double,? super Double,? extends Double> remappingFunction)

Deprecated.

Please use the corresponding type-specific method instead.

This default implementation just delegates to the corresponding Map method.

Specified by:

merge in interface Long2DoubleMap

Specified by:

merge in interface Map<Long,Double>