public class Int2FloatArrayMap extends AbstractInt2FloatMap 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.
AbstractInt2FloatMap.BasicEntry
Int2FloatMap.Entry, Int2FloatMap.FastEntrySet
Constructor and Description |
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Int2FloatArrayMap()
Creates a new empty array map.
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Int2FloatArrayMap(int capacity)
Creates a new empty array map of given capacity.
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Int2FloatArrayMap(int[] key,
float[] value)
Creates a new empty array map with given key and value backing arrays.
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Int2FloatArrayMap(int[] key,
float[] 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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Int2FloatArrayMap(Int2FloatMap m)
Creates a new empty array map copying the entries of a given map.
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Int2FloatArrayMap(Map<? extends Integer,? extends Float> 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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Int2FloatArrayMap |
clone()
Returns a deep copy of this map.
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boolean |
containsKey(int k)
Checks whether the given value is contained in
AbstractInt2FloatMap.keySet() . |
boolean |
containsValue(float v)
Checks whether the given value is contained in
AbstractInt2FloatMap.values() . |
float |
get(int k)
Returns the value to which the given key is mapped.
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Int2FloatMap.FastEntrySet |
int2FloatEntrySet()
Returns a type-specific set view of the mappings contained in this map.
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boolean |
isEmpty() |
IntSet |
keySet()
Returns a type-specific-set view of the keys of this map.
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float |
put(int k,
float v)
Adds a pair to the map.
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float |
remove(int 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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FloatCollection |
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 Int2FloatArrayMap(int[] key, float[] 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 Int2FloatArrayMap()
public Int2FloatArrayMap(int capacity)
capacity
- the initial capacity.public Int2FloatArrayMap(Int2FloatMap m)
m
- a map.public Int2FloatArrayMap(Map<? extends Integer,? extends Float> m)
m
- a map.public Int2FloatArrayMap(int[] key, float[] 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 Int2FloatMap.FastEntrySet int2FloatEntrySet()
Int2FloatMap
This method is necessary because there is no inheritance along
type parameters: it is thus impossible to strengthen Int2FloatMap.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).
int2FloatEntrySet
in interface Int2FloatMap
Int2FloatMap.entrySet()
public float get(int k)
Int2FloatFunction
get
in interface Int2FloatFunction
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(int k)
AbstractInt2FloatMap
AbstractInt2FloatMap.keySet()
.containsKey
in interface Int2FloatFunction
containsKey
in class AbstractInt2FloatMap
Function.containsKey(Object)
public boolean containsValue(float v)
AbstractInt2FloatMap
AbstractInt2FloatMap.values()
.containsValue
in interface Int2FloatMap
containsValue
in class AbstractInt2FloatMap
Map.containsValue(Object)
public boolean isEmpty()
public float put(int k, float v)
Int2FloatFunction
put
in interface Int2FloatFunction
put
in class AbstractInt2FloatFunction
k
- the key.v
- the value.Function.put(Object,Object)
public float remove(int k)
Int2FloatFunction
remove
in interface Int2FloatFunction
remove
in class AbstractInt2FloatFunction
k
- the key.Function.remove(Object)
public IntSet keySet()
AbstractInt2FloatMap
The view is backed by the set returned by AbstractInt2FloatMap.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 Int2FloatMap
keySet
in interface Map<Integer,Float>
keySet
in class AbstractInt2FloatMap
Map.keySet()
public FloatCollection values()
AbstractInt2FloatMap
The view is backed by the set returned by AbstractInt2FloatMap.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 Int2FloatMap
values
in interface Map<Integer,Float>
values
in class AbstractInt2FloatMap
Map.values()
public Int2FloatArrayMap 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.