public class Float2DoubleArrayMap extends AbstractFloat2DoubleMap implements Serializable, Cloneable
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.
AbstractFloat2DoubleMap.BasicEntry
Float2DoubleMap.Entry, Float2DoubleMap.FastEntrySet
Constructor and Description |
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Float2DoubleArrayMap()
Creates a new empty array map.
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Float2DoubleArrayMap(float[] key,
double[] value)
Creates a new empty array map with given key and value backing arrays.
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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.
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Float2DoubleArrayMap(Float2DoubleMap m)
Creates a new empty array map copying the entries of a given map.
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Float2DoubleArrayMap(int capacity)
Creates a new empty array map of given capacity.
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Float2DoubleArrayMap(Map<? extends Float,? extends Double> m)
Creates a new empty array map copying the entries of a given map.
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Modifier and Type | Method and Description |
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void |
clear()
Removes all associations from this function (optional operation).
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Float2DoubleArrayMap |
clone()
Returns a deep copy of this map.
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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.
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double |
get(float k)
Returns the value to which the given key is mapped.
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boolean |
isEmpty() |
FloatSet |
keySet()
Returns a type-specific-set view of the keys of this map.
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double |
put(float k,
double v)
Adds a pair to the map.
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double |
remove(float k)
Removes the mapping with the given key.
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int |
size()
Returns the intended number of keys in this function, or -1 if no such number exists.
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DoubleCollection |
values()
Returns a type-specific-set view of the values of this map.
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containsValue, entrySet, equals, hashCode, putAll, toString
containsKey, defaultReturnValue, defaultReturnValue, get, put, remove
defaultReturnValue, defaultReturnValue
containsKey, get, put, remove
containsKey, get, put, remove
public Float2DoubleArrayMap(float[] key, double[] value)
It is responsibility of the caller that the elements of key
are distinct.
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(Map<? extends Float,? extends Double> m)
m
- a map.public Float2DoubleArrayMap(float[] key, double[] value, int size)
It is responsibility of the caller that the first size
elements of key
are distinct.
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
.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 Map.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.
public void clear()
Function
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()
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 Map<Float,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 Map<Float,Double>
values
in class AbstractFloat2DoubleMap
Map.values()
public Float2DoubleArrayMap 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.