|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectit.unimi.dsi.fastutil.floats.AbstractFloat2DoubleFunction
it.unimi.dsi.fastutil.floats.AbstractFloat2DoubleMap
it.unimi.dsi.fastutil.floats.Float2DoubleArrayMap
public class Float2DoubleArrayMap
A simple, brute-force implementation of a map based on two parallel backing arrays.
The main purpose of this implementation is that of wrapping cleanly the brute-force approach to the storage of a very small number of pairs: just put them into two parallel arrays and scan linearly to find an item.
Nested Class Summary |
---|
Nested classes/interfaces inherited from class it.unimi.dsi.fastutil.floats.AbstractFloat2DoubleMap |
---|
AbstractFloat2DoubleMap.BasicEntry |
Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.floats.Float2DoubleMap |
---|
Float2DoubleMap.Entry, Float2DoubleMap.FastEntrySet |
Constructor Summary | |
---|---|
Float2DoubleArrayMap()
Creates a new empty array map. |
|
Float2DoubleArrayMap(float[] key,
double[] value)
Creates a new empty array map with given key and value backing arrays. |
|
Float2DoubleArrayMap(float[] key,
double[] value,
int size)
Creates a new array map with given key and value backing arrays, using the given number of elements. |
|
Float2DoubleArrayMap(Float2DoubleMap m)
Creates a new empty array map copying the entries of a given map. |
|
Float2DoubleArrayMap(int capacity)
Creates a new empty array map of given capacity. |
Method Summary | |
---|---|
void |
clear()
Removes all associations from this function (optional operation). |
java.lang.Object |
clone()
Returns a deep copy of this map. |
boolean |
containsKey(float k)
Checks whether the given value is contained in AbstractFloat2DoubleMap.keySet() . |
boolean |
containsValue(double v)
Checks whether the given value is contained in AbstractFloat2DoubleMap.values() . |
Float2DoubleMap.FastEntrySet |
float2DoubleEntrySet()
Returns a type-specific set view of the mappings contained in this map. |
double |
get(float k)
Returns the value to which the given key is mapped. |
boolean |
isEmpty()
|
FloatSet |
keySet()
Returns a type-specific-set view of the keys of this map. |
double |
put(float k,
double v)
Adds a pair to the map. |
double |
remove(float k)
Removes the mapping with the given key. |
int |
size()
Returns the intended number of keys in this function, or -1 if no such number exists. |
DoubleCollection |
values()
Returns a type-specific-set view of the values of this map. |
Methods inherited from class it.unimi.dsi.fastutil.floats.AbstractFloat2DoubleMap |
---|
containsValue, entrySet, equals, hashCode, putAll, toString |
Methods inherited from class it.unimi.dsi.fastutil.floats.AbstractFloat2DoubleFunction |
---|
containsKey, defaultReturnValue, defaultReturnValue, get, put, remove |
Methods inherited from class java.lang.Object |
---|
getClass, notify, notifyAll, wait, wait, wait |
Methods inherited from interface it.unimi.dsi.fastutil.floats.Float2DoubleFunction |
---|
defaultReturnValue, defaultReturnValue |
Methods inherited from interface it.unimi.dsi.fastutil.Function |
---|
containsKey, get, put, remove |
Methods inherited from interface java.util.Map |
---|
containsKey, get, put, remove |
Constructor Detail |
---|
public Float2DoubleArrayMap(float[] key, double[] value)
key
- the key array.value
- the value array (it must have the same length as key
).public Float2DoubleArrayMap()
public Float2DoubleArrayMap(int capacity)
capacity
- the initial capacity.public Float2DoubleArrayMap(Float2DoubleMap m)
m
- a map.public Float2DoubleArrayMap(float[] key, double[] value, int size)
key
- the key array.value
- the value array (it must have the same length as key
).size
- the number of valid elements in key
and value
.Method Detail |
---|
public Float2DoubleMap.FastEntrySet float2DoubleEntrySet()
Float2DoubleMap
This method is necessary because there is no inheritance along
type parameters: it is thus impossible to strengthen Float2DoubleMap.entrySet()
so that it returns an ObjectSet
of objects of type Float2DoubleMap.Entry
(the latter makes it possible to
access keys and values with type-specific methods).
float2DoubleEntrySet
in interface Float2DoubleMap
Float2DoubleMap.entrySet()
public double get(float k)
Float2DoubleFunction
get
in interface Float2DoubleFunction
k
- the key.
Function.get(Object)
public int size()
Function
Most function implementations will have some knowledge of the intended number of keys in their domain. In some cases, however, this might not be possible.
size
in interface Function<java.lang.Float,java.lang.Double>
size
in interface java.util.Map<java.lang.Float,java.lang.Double>
public void clear()
Function
clear
in interface Function<java.lang.Float,java.lang.Double>
clear
in interface java.util.Map<java.lang.Float,java.lang.Double>
clear
in class AbstractFloat2DoubleFunction
Map.clear()
public boolean containsKey(float k)
AbstractFloat2DoubleMap
AbstractFloat2DoubleMap.keySet()
.
containsKey
in interface Float2DoubleFunction
containsKey
in class AbstractFloat2DoubleMap
Function.containsKey(Object)
public boolean containsValue(double v)
AbstractFloat2DoubleMap
AbstractFloat2DoubleMap.values()
.
containsValue
in interface Float2DoubleMap
containsValue
in class AbstractFloat2DoubleMap
Map.containsValue(Object)
public boolean isEmpty()
isEmpty
in interface java.util.Map<java.lang.Float,java.lang.Double>
isEmpty
in class AbstractFloat2DoubleMap
public double put(float k, double v)
Float2DoubleFunction
put
in interface Float2DoubleFunction
put
in class AbstractFloat2DoubleFunction
k
- the key.v
- the value.
Function.put(Object,Object)
public double remove(float k)
Float2DoubleFunction
remove
in interface Float2DoubleFunction
remove
in class AbstractFloat2DoubleFunction
Function.remove(Object)
public FloatSet keySet()
AbstractFloat2DoubleMap
The view is backed by the set returned by AbstractFloat2DoubleMap.entrySet()
. Note that
no attempt is made at caching the result of this method, as this would
require adding some attributes that lightweight implementations would
not need. Subclasses may easily override this policy by calling
this method and caching the result, but implementors are encouraged to
write more efficient ad-hoc implementations.
keySet
in interface Float2DoubleMap
keySet
in interface java.util.Map<java.lang.Float,java.lang.Double>
keySet
in class AbstractFloat2DoubleMap
Map.keySet()
public DoubleCollection values()
AbstractFloat2DoubleMap
The view is backed by the set returned by AbstractFloat2DoubleMap.entrySet()
. Note that
no attempt is made at caching the result of this method, as this would
require adding some attributes that lightweight implementations would
not need. Subclasses may easily override this policy by calling
this method and caching the result, but implementors are encouraged to
write more efficient ad-hoc implementations.
values
in interface Float2DoubleMap
values
in interface java.util.Map<java.lang.Float,java.lang.Double>
values
in class AbstractFloat2DoubleMap
Map.values()
public java.lang.Object clone()
This method performs a deep copy of this hash map; the data stored in the map, however, is not cloned. Note that this makes a difference only for object keys.
clone
in class java.lang.Object
|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |