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java.lang.Objectit.unimi.dsi.fastutil.shorts.AbstractShort2ObjectFunction<V>
it.unimi.dsi.fastutil.shorts.AbstractShort2ObjectMap<V>
it.unimi.dsi.fastutil.shorts.Short2ObjectArrayMap<V>
public class Short2ObjectArrayMap<V>
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 |
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Nested classes/interfaces inherited from class it.unimi.dsi.fastutil.shorts.AbstractShort2ObjectMap |
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AbstractShort2ObjectMap.BasicEntry<V> |
Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.shorts.Short2ObjectMap |
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Short2ObjectMap.Entry<V>, Short2ObjectMap.FastEntrySet<V> |
Constructor Summary | |
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Short2ObjectArrayMap()
Creates a new empty array map. |
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Short2ObjectArrayMap(int capacity)
Creates a new empty array map of given capacity. |
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Short2ObjectArrayMap(Map<? extends Short,? extends V> m)
Creates a new empty array map copying the entries of a given map. |
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Short2ObjectArrayMap(short[] key,
Object[] value)
Creates a new empty array map with given key and value backing arrays. |
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Short2ObjectArrayMap(short[] key,
Object[] 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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Short2ObjectArrayMap(Short2ObjectMap<V> m)
Creates a new empty array map copying the entries of a given map. |
Method Summary | |
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void |
clear()
Removes all associations from this function (optional operation). |
Short2ObjectArrayMap<V> |
clone()
Returns a deep copy of this map. |
boolean |
containsKey(short k)
Checks whether the given value is contained in AbstractShort2ObjectMap.keySet() . |
boolean |
containsValue(Object v)
Checks whether the given value is contained in AbstractShort2ObjectMap.values() . |
V |
get(short k)
Returns the value to which the given key is mapped. |
boolean |
isEmpty()
|
ShortSet |
keySet()
Returns a type-specific-set view of the keys of this map. |
V |
put(short k,
V v)
Adds a pair to the map. |
V |
remove(short k)
Removes the mapping with the given key. |
Short2ObjectMap.FastEntrySet<V> |
short2ObjectEntrySet()
Returns a type-specific set view of the mappings contained in this map. |
int |
size()
Returns the intended number of keys in this function, or -1 if no such number exists. |
ObjectCollection<V> |
values()
Returns a type-specific-set view of the values of this map. |
Methods inherited from class it.unimi.dsi.fastutil.shorts.AbstractShort2ObjectMap |
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entrySet, equals, hashCode, putAll, toString |
Methods inherited from class it.unimi.dsi.fastutil.shorts.AbstractShort2ObjectFunction |
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containsKey, defaultReturnValue, defaultReturnValue, get, put, remove |
Methods inherited from class java.lang.Object |
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getClass, notify, notifyAll, wait, wait, wait |
Methods inherited from interface it.unimi.dsi.fastutil.shorts.Short2ObjectFunction |
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defaultReturnValue, defaultReturnValue |
Methods inherited from interface it.unimi.dsi.fastutil.Function |
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containsKey, get, put, remove |
Methods inherited from interface java.util.Map |
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containsKey, get, put, remove |
Constructor Detail |
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public Short2ObjectArrayMap(short[] key, Object[] 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 Short2ObjectArrayMap()
public Short2ObjectArrayMap(int capacity)
capacity
- the initial capacity.public Short2ObjectArrayMap(Short2ObjectMap<V> m)
m
- a map.public Short2ObjectArrayMap(Map<? extends Short,? extends V> m)
m
- a map.public Short2ObjectArrayMap(short[] key, Object[] 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
.Method Detail |
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public Short2ObjectMap.FastEntrySet<V> short2ObjectEntrySet()
Short2ObjectMap
This method is necessary because there is no inheritance along
type parameters: it is thus impossible to strengthen Short2ObjectMap.entrySet()
so that it returns an ObjectSet
of objects of type Short2ObjectMap.Entry
(the latter makes it possible to
access keys and values with type-specific methods).
short2ObjectEntrySet
in interface Short2ObjectMap<V>
Short2ObjectMap.entrySet()
public V get(short k)
Short2ObjectFunction
get
in interface Short2ObjectFunction<V>
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<Short,V>
size
in interface Map<Short,V>
public void clear()
Function
clear
in interface Function<Short,V>
clear
in interface Map<Short,V>
clear
in class AbstractShort2ObjectFunction<V>
Map.clear()
public boolean containsKey(short k)
AbstractShort2ObjectMap
AbstractShort2ObjectMap.keySet()
.
containsKey
in interface Short2ObjectFunction<V>
containsKey
in class AbstractShort2ObjectMap<V>
Function.containsKey(Object)
public boolean containsValue(Object v)
AbstractShort2ObjectMap
AbstractShort2ObjectMap.values()
.
containsValue
in interface Map<Short,V>
containsValue
in class AbstractShort2ObjectMap<V>
public boolean isEmpty()
isEmpty
in interface Map<Short,V>
isEmpty
in class AbstractShort2ObjectMap<V>
public V put(short k, V v)
Short2ObjectFunction
put
in interface Short2ObjectFunction<V>
put
in class AbstractShort2ObjectFunction<V>
k
- the key.v
- the value.
Function.put(Object,Object)
public V remove(short k)
Short2ObjectFunction
remove
in interface Short2ObjectFunction<V>
remove
in class AbstractShort2ObjectFunction<V>
Function.remove(Object)
public ShortSet keySet()
AbstractShort2ObjectMap
The view is backed by the set returned by AbstractShort2ObjectMap.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 Short2ObjectMap<V>
keySet
in interface Map<Short,V>
keySet
in class AbstractShort2ObjectMap<V>
Map.keySet()
public ObjectCollection<V> values()
AbstractShort2ObjectMap
The view is backed by the set returned by AbstractShort2ObjectMap.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 Short2ObjectMap<V>
values
in interface Map<Short,V>
values
in class AbstractShort2ObjectMap<V>
Map.values()
public Short2ObjectArrayMap<V> 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 Object
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