public interface Double2FloatMap extends Double2FloatFunction, Map<Double,Float>
Map; provides some additional methods that use polymorphism to avoid (un)boxing, and handling of a default return value.
Besides extending the corresponding type-specific function, this interface strengthens Map.entrySet(),
keySet() and values(). Moreover, a number of methods, such as size(), defaultReturnValue(), etc., are un-defaulted
as their function default do not make sense for a map.
Maps returning entry sets of type Double2FloatMap.FastEntrySet support also fast iteration.
A submap or subset may or may not have an independent default return value (which however must be initialized to the default return value of the originator).
Map| Modifier and Type | Interface and Description |
|---|---|
static interface |
Double2FloatMap.Entry
A type-specific
Map.Entry; provides some additional methods
that use polymorphism to avoid (un)boxing. |
static interface |
Double2FloatMap.FastEntrySet
An entry set providing fast iteration.
|
| Modifier and Type | Method and Description |
|---|---|
default void |
clear()
Removes all of the mappings from this map (optional operation).
|
default float |
compute(double key,
BiFunction<? super Double,? super Float,? extends Float> remappingFunction)
Attempts to compute a mapping for the specified key and its current mapped value (or
null if there is no current mapping). |
default Float |
compute(Double key,
BiFunction<? super Double,? super Float,? extends Float> remappingFunction)
Deprecated.
Please use the corresponding type-specific method instead.
|
default float |
computeIfAbsent(double key,
DoubleUnaryOperator 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.
|
default Float |
computeIfAbsent(Double key,
Function<? super Double,? extends Float> mappingFunction)
Deprecated.
Please use the corresponding type-specific method instead.
|
default float |
computeIfAbsentNullable(double key,
DoubleFunction<? extends Float> 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. |
default float |
computeIfAbsentPartial(double key,
Double2FloatFunction 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.
|
default float |
computeIfPresent(double key,
BiFunction<? super Double,? super Float,? extends Float> remappingFunction)
If the value for the specified key is present, attempts to compute a new mapping given the key and its current mapped value.
|
default Float |
computeIfPresent(Double key,
BiFunction<? super Double,? super Float,? extends Float> remappingFunction)
Deprecated.
Please use the corresponding type-specific method instead.
|
boolean |
containsKey(double key)
Returns true if this function contains a mapping for the specified key.
|
default boolean |
containsKey(Object key)
Deprecated.
Please use the corresponding type-specific method instead.
|
boolean |
containsValue(float value)
Returns
true if this map maps one or more keys to the specified value. |
default boolean |
containsValue(Object value)
Deprecated.
Please use the corresponding type-specific method instead.
|
float |
defaultReturnValue()
Gets the default return value.
|
void |
defaultReturnValue(float rv)
Sets the default return value (optional operation).
|
ObjectSet<Double2FloatMap.Entry> |
double2FloatEntrySet()
Returns a type-specific set view of the mappings contained in this map.
|
default ObjectSet<Map.Entry<Double,Float>> |
entrySet()
Deprecated.
Please use the corresponding type-specific method instead.
|
default Float |
get(Object key)
Deprecated.
Please use the corresponding type-specific method instead.
|
default float |
getOrDefault(double key,
float defaultValue)
Returns the value to which the specified key is mapped, or the
defaultValue if this
map contains no mapping for the key. |
default Float |
getOrDefault(Object key,
Float defaultValue)
Deprecated.
Please use the corresponding type-specific method instead.
|
DoubleSet |
keySet()
Note that this specification strengthens the one given in
Map.keySet(). |
default float |
merge(double key,
float value,
BiFunction<? super Float,? super Float,? extends Float> remappingFunction)
If the specified key is not already associated with a value, associates it with the given
value. |
default Float |
merge(Double key,
Float value,
BiFunction<? super Float,? super Float,? extends Float> remappingFunction)
Deprecated.
Please use the corresponding type-specific method instead.
|
default Float |
put(Double key,
Float value)
Deprecated.
Please use the corresponding type-specific method instead.
|
default float |
putIfAbsent(double key,
float 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.
|
default Float |
putIfAbsent(Double key,
Float value)
Deprecated.
Please use the corresponding type-specific method instead.
|
default boolean |
remove(double key,
float value)
Removes the entry for the specified key only if it is currently mapped to the specified value.
|
default Float |
remove(Object key)
Deprecated.
Please use the corresponding type-specific method instead.
|
default boolean |
remove(Object key,
Object value)
Deprecated.
Please use the corresponding type-specific method instead.
|
default float |
replace(double key,
float value)
Replaces the entry for the specified key only if it is currently mapped to some value.
|
default Float |
replace(Double key,
Float value)
Deprecated.
Please use the corresponding type-specific method instead.
|
default boolean |
replace(double key,
float oldValue,
float newValue)
Replaces the entry for the specified key only if currently mapped to the specified value.
|
default boolean |
replace(Double key,
Float oldValue,
Float newValue)
Deprecated.
Please use the corresponding type-specific method instead.
|
int |
size()
Returns the number of key/value mappings in this map.
|
FloatCollection |
values()
Note that this specification strengthens the one given in
Map.values(). |
applyAsDouble, get, put, removeandThen, compose, identityint size()
Integer.MAX_VALUE elements, returns Integer.MAX_VALUE.default void clear()
clear in interface Map<Double,Float>UnsupportedOperationException - if the clear() operation is not supported by this mapMap.clear()void defaultReturnValue(float rv)
get(),
put() and remove() to denote that the map does not contain
the specified key. It must be 0/false by default.defaultReturnValue in interface Double2FloatFunctionrv - the new default return value.defaultReturnValue()float defaultReturnValue()
defaultReturnValue in interface Double2FloatFunctionObjectSet<Double2FloatMap.Entry> double2FloatEntrySet()
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).
Map.entrySet()@Deprecated default ObjectSet<Map.Entry<Double,Float>> entrySet()
Note that this specification strengthens the one given in Map.entrySet().
entrySet in interface Map<Double,Float>Map.entrySet()@Deprecated default Float put(Double key, Float value)
This default implementation just delegates to the corresponding type-specific–function method.
put in interface Double2FloatFunctionput in interface Map<Double,Float>key - the key.value - the value.null if no value was present for the given key.Map.put(Object,Object)@Deprecated default Float get(Object key)
This default implementation just delegates to the corresponding type-specific–function method.
get in interface Double2FloatFunctionget in interface Map<Double,Float>key - the key.null if no value was present for the given key.Map.get(Object)@Deprecated default Float remove(Object key)
This default implementation just delegates to the corresponding type-specific–function method.
remove in interface Double2FloatFunctionremove in interface Map<Double,Float>key - the key.null if no value was present for the given key.Map.remove(Object)DoubleSet keySet()
Note that this specification strengthens the one given in Map.keySet().
keySet in interface Map<Double,Float>Map.keySet()FloatCollection values()
Note that this specification strengthens the one given in Map.values().
values in interface Map<Double,Float>Map.values()boolean containsKey(double key)
containsKey in interface Double2FloatFunctionkey - the key.key.Map.containsKey(Object)@Deprecated default boolean containsKey(Object key)
This default implementation just delegates to the corresponding type-specific–function method.
containsKey in interface Double2FloatFunctioncontainsKey in interface Map<Double,Float>key - the key.key.Map.containsKey(Object)boolean containsValue(float value)
true if this map maps one or more keys to the specified value.Map.containsValue(Object)@Deprecated default boolean containsValue(Object value)
containsValue in interface Map<Double,Float>default float getOrDefault(double key,
float defaultValue)
defaultValue if this
map contains no mapping for the key.key - the key.defaultValue - the default mapping of the key.defaultValue if this map contains no mapping for the key.Map.getOrDefault(Object, Object)default float putIfAbsent(double key,
float value)
key - key with which the specified value is to be associated.value - value to be associated with the specified key.Map.putIfAbsent(Object, Object)default boolean remove(double key,
float value)
key - key with which the specified value is associated.value - value expected to be associated with the specified key.true if the value was removed.Map.remove(Object, Object)default boolean replace(double key,
float oldValue,
float newValue)
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.true if the value was replaced.Map.replace(Object, Object, Object)default float replace(double key,
float value)
key - key with which the specified value is associated.value - value to be associated with the specified key.Map.replace(Object, Object)default float computeIfAbsent(double key,
DoubleUnaryOperator mappingFunction)
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.
key - key with which the specified value is to be associated.mappingFunction - the function to compute a value.Map.computeIfAbsent(Object, java.util.function.Function)default float computeIfAbsentNullable(double key,
DoubleFunction<? extends Float> mappingFunction)
null.
Note that this version of computeIfAbsent()
should be used only if you plan to return null in the mapping function.
key - key with which the specified value is to be associated.mappingFunction - the function to compute a value.null.Map.computeIfAbsent(Object, java.util.function.Function)default float computeIfAbsentPartial(double key,
Double2FloatFunction mappingFunction)
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.
key - key with which the specified value is to be associated.mappingFunction - the function to compute a value.Map.computeIfAbsent(Object, java.util.function.Function)default float computeIfPresent(double key,
BiFunction<? super Double,? super Float,? extends Float> remappingFunction)
key - key with which the specified value is to be associated.remappingFunction - the function to compute a value.Map.computeIfPresent(Object, java.util.function.BiFunction)default float compute(double key,
BiFunction<? super Double,? super Float,? extends Float> remappingFunction)
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.
key - key with which the specified value is to be associated.remappingFunction - the function to compute a value.Map.compute(Object, java.util.function.BiFunction)default float merge(double key,
float value,
BiFunction<? super Float,? super Float,? extends Float> remappingFunction)
value.
Otherwise, replaces the associated value with the results of the given remapping function, or removes if the result is null.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.Map.merge(Object, Object, java.util.function.BiFunction)@Deprecated default Float getOrDefault(Object key, Float defaultValue)
This default implementation just delegates to the corresponding Map method.
getOrDefault in interface Map<Double,Float>@Deprecated default Float putIfAbsent(Double key, Float value)
This default implementation just delegates to the corresponding Map method.
putIfAbsent in interface Map<Double,Float>@Deprecated default boolean remove(Object key, Object value)
This default implementation just delegates to the corresponding Map method.
@Deprecated default boolean replace(Double key, Float oldValue, Float newValue)
This default implementation just delegates to the corresponding Map method.
@Deprecated default Float replace(Double key, Float value)
This default implementation just delegates to the corresponding Map method.
@Deprecated default Float computeIfAbsent(Double key, Function<? super Double,? extends Float> mappingFunction)
This default implementation just delegates to the corresponding Map method.
computeIfAbsent in interface Map<Double,Float>@Deprecated default Float computeIfPresent(Double key, BiFunction<? super Double,? super Float,? extends Float> remappingFunction)
This default implementation just delegates to the corresponding Map method.
computeIfPresent in interface Map<Double,Float>@Deprecated default Float compute(Double key, BiFunction<? super Double,? super Float,? extends Float> remappingFunction)
This default implementation just delegates to the corresponding Map method.
@Deprecated default Float merge(Double key, Float value, BiFunction<? super Float,? super Float,? extends Float> remappingFunction)
This default implementation just delegates to the corresponding Map method.