public class Float2BooleanArrayMap extends AbstractFloat2BooleanMap 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.
AbstractFloat2BooleanMap.BasicEntry
Float2BooleanMap.Entry, Float2BooleanMap.FastEntrySet
Constructor and Description |
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Float2BooleanArrayMap()
Creates a new empty array map.
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Float2BooleanArrayMap(float[] key,
boolean[] value)
Creates a new empty array map with given key and value backing arrays.
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Float2BooleanArrayMap(float[] key,
boolean[] 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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Float2BooleanArrayMap(Float2BooleanMap m)
Creates a new empty array map copying the entries of a given map.
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Float2BooleanArrayMap(int capacity)
Creates a new empty array map of given capacity.
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Float2BooleanArrayMap(Map<? extends Float,? extends Boolean> 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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Float2BooleanArrayMap |
clone()
Returns a deep copy of this map.
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boolean |
containsKey(float k)
Checks whether the given value is contained in
AbstractFloat2BooleanMap.keySet() . |
boolean |
containsValue(boolean v)
Checks whether the given value is contained in
AbstractFloat2BooleanMap.values() . |
Float2BooleanMap.FastEntrySet |
float2BooleanEntrySet()
Returns a type-specific set view of the mappings contained in this map.
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boolean |
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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boolean |
put(float k,
boolean v)
Adds a pair to the map.
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boolean |
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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BooleanCollection |
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 Float2BooleanArrayMap(float[] key, boolean[] 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 Float2BooleanArrayMap()
public Float2BooleanArrayMap(int capacity)
capacity
- the initial capacity.public Float2BooleanArrayMap(Float2BooleanMap m)
m
- a map.public Float2BooleanArrayMap(Map<? extends Float,? extends Boolean> m)
m
- a map.public Float2BooleanArrayMap(float[] key, boolean[] 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 Float2BooleanMap.FastEntrySet float2BooleanEntrySet()
Float2BooleanMap
This method is necessary because there is no inheritance along
type parameters: it is thus impossible to strengthen Float2BooleanMap.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).
float2BooleanEntrySet
in interface Float2BooleanMap
Float2BooleanMap.entrySet()
public boolean get(float k)
Float2BooleanFunction
get
in interface Float2BooleanFunction
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)
AbstractFloat2BooleanMap
AbstractFloat2BooleanMap.keySet()
.containsKey
in interface Float2BooleanFunction
containsKey
in class AbstractFloat2BooleanMap
Function.containsKey(Object)
public boolean containsValue(boolean v)
AbstractFloat2BooleanMap
AbstractFloat2BooleanMap.values()
.containsValue
in interface Float2BooleanMap
containsValue
in class AbstractFloat2BooleanMap
Map.containsValue(Object)
public boolean isEmpty()
public boolean put(float k, boolean v)
Float2BooleanFunction
put
in interface Float2BooleanFunction
put
in class AbstractFloat2BooleanFunction
k
- the key.v
- the value.Function.put(Object,Object)
public boolean remove(float k)
Float2BooleanFunction
remove
in interface Float2BooleanFunction
remove
in class AbstractFloat2BooleanFunction
Function.remove(Object)
public FloatSet keySet()
AbstractFloat2BooleanMap
The view is backed by the set returned by AbstractFloat2BooleanMap.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 Float2BooleanMap
keySet
in interface Map<Float,Boolean>
keySet
in class AbstractFloat2BooleanMap
Map.keySet()
public BooleanCollection values()
AbstractFloat2BooleanMap
The view is backed by the set returned by AbstractFloat2BooleanMap.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 Float2BooleanMap
values
in interface Map<Float,Boolean>
values
in class AbstractFloat2BooleanMap
Map.values()
public Float2BooleanArrayMap 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.