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java.lang.Objectit.unimi.dsi.fastutil.objects.AbstractReference2DoubleMap
it.unimi.dsi.fastutil.objects.Reference2DoubleMaps.EmptyMap
An immutable class representing an empty type-specific map.
This class may be useful to implement your own in case you subclass a type-specific map.
Nested Class Summary |
Nested classes inherited from class it.unimi.dsi.fastutil.objects.AbstractReference2DoubleMap |
AbstractReference2DoubleMap.BasicEntry |
Nested classes inherited from class it.unimi.dsi.fastutil.objects.Reference2DoubleMap |
Reference2DoubleMap.Entry |
Field Summary | |
static long |
serialVersionUID
|
Method Summary | |
void |
clear()
|
Object |
clone()
|
boolean |
containsKey(Object k)
Checks whether the given value is contained in keySet() . |
boolean |
containsValue(double v)
Checks whether the given value is contained in values() . |
boolean |
containsValue(Object ov)
|
double |
defaultReturnValue()
Gets the default return value. |
void |
defaultReturnValue(double defRetValue)
Sets the default return value. |
Set |
entrySet()
|
Object |
get(Object ok)
Delegates to the corresponding type-specific method, taking care of returning null on a missing key.
|
double |
getDouble(Object k)
Returns the value to which the given key is mapped. |
Set |
keySet()
Returns a type-specific-set view of the keys of this map. |
double |
put(Object k,
double v)
Adds a pair to the map. |
Object |
put(Object k,
Object v)
Delegates to the corresponding type-specific method, taking care of returning null on a missing key.
|
void |
putAll(Map m)
Puts all pairs in the given map. |
int |
size()
|
Collection |
values()
Returns a type-specific-set view of the values of this map. |
Methods inherited from class it.unimi.dsi.fastutil.objects.AbstractReference2DoubleMap |
equals, getDefRetValue, hashCode, isEmpty, remove, removeDouble, setDefRetValue, toString |
Methods inherited from class java.lang.Object |
getClass, notify, notifyAll, wait, wait, wait |
Field Detail |
public static final long serialVersionUID
Method Detail |
public double put(Object k, double v)
Reference2DoubleMap
put
in interface Reference2DoubleMap
put
in class AbstractReference2DoubleMap
public Object get(Object ok)
AbstractReference2DoubleMap
null
on a missing key.
This method must check whether the provided key is in the map using containsKey()
. Thus,
it probes the map twice. Implementors of subclasses should override it with a more efficient method.
get
in interface Map
get
in class AbstractReference2DoubleMap
public boolean containsKey(Object k)
AbstractReference2DoubleMap
AbstractReference2DoubleMap.keySet()
.
containsKey
in interface Map
containsKey
in class AbstractReference2DoubleMap
public boolean containsValue(double v)
AbstractReference2DoubleMap
AbstractReference2DoubleMap.values()
.
containsValue
in interface Reference2DoubleMap
containsValue
in class AbstractReference2DoubleMap
public double defaultReturnValue()
Reference2DoubleMap
defaultReturnValue
in interface Reference2DoubleMap
defaultReturnValue
in class AbstractReference2DoubleMap
public void defaultReturnValue(double defRetValue)
Reference2DoubleMap
get()
, put()
and remove()
to
denote that the map does not contain the specified key. It must be
0/false
/null
by default.
defaultReturnValue
in interface Reference2DoubleMap
defaultReturnValue
in class AbstractReference2DoubleMap
public void putAll(Map m)
AbstractReference2DoubleMap
putAll
in interface Map
putAll
in class AbstractReference2DoubleMap
m
- a map.public Set entrySet()
entrySet
in interface Map
public Set keySet()
AbstractReference2DoubleMap
The view is backed by the set returned by Map.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 Map
keySet
in class AbstractReference2DoubleMap
public Collection values()
AbstractReference2DoubleMap
The view is backed by the set returned by Map.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 Map
values
in class AbstractReference2DoubleMap
public Object put(Object k, Object v)
AbstractReference2DoubleMap
null
on a missing key.
This method must check whether the provided key is in the map using containsKey()
. Thus,
it probes the map twice. Implementors of subclasses should override it with a more efficient method.
put
in interface Map
put
in class AbstractReference2DoubleMap
public boolean containsValue(Object ov)
containsValue
in interface Map
containsValue
in class AbstractReference2DoubleMap
public double getDouble(Object k)
Reference2DoubleMap
getDouble
in interface Reference2DoubleMap
k
- the key.
Map.get(Object)
public int size()
size
in interface Map
public void clear()
clear
in interface Map
clear
in class AbstractReference2DoubleMap
public Object clone()
|
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