public static class Long2DoubleFunctions.SynchronizedFunction extends AbstractLong2DoubleFunction implements Serializable
Modifier and Type | Method and Description |
---|---|
void |
clear()
Removes all associations from this function (optional operation).
|
boolean |
containsKey(long k) |
boolean |
containsKey(Object ok)
Returns true if this function contains a mapping for the specified key.
|
double |
defaultReturnValue()
Gets the default return value.
|
void |
defaultReturnValue(double defRetValue)
Sets the default return value.
|
double |
get(long k)
Returns the value to which the given key is mapped.
|
Double |
get(Object k)
Delegates to the corresponding type-specific method, taking care of returning
null on a missing key. |
double |
put(long k,
double v)
Adds a pair to the map.
|
Double |
put(Long k,
Double v)
Delegates to the corresponding type-specific method, taking care of returning
null on a missing key. |
double |
remove(long k)
Removes the mapping with the given key.
|
Double |
remove(Object k)
Delegates to the corresponding type-specific method, taking care of returning
null on a missing key. |
int |
size()
Returns the intended number of keys in this function, or -1 if no such number exists.
|
String |
toString() |
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 boolean containsKey(long k)
containsKey
in interface Long2DoubleFunction
Function.containsKey(Object)
public double defaultReturnValue()
Long2DoubleFunction
defaultReturnValue
in interface Long2DoubleFunction
defaultReturnValue
in class AbstractLong2DoubleFunction
public void defaultReturnValue(double defRetValue)
Long2DoubleFunction
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 Long2DoubleFunction
defaultReturnValue
in class AbstractLong2DoubleFunction
defRetValue
- the new default return value.Long2DoubleFunction.defaultReturnValue()
public double put(long k, double v)
Long2DoubleFunction
put
in interface Long2DoubleFunction
put
in class AbstractLong2DoubleFunction
k
- the key.v
- the value.Function.put(Object,Object)
public void clear()
Function
clear
in interface Function<Long,Double>
clear
in class AbstractLong2DoubleFunction
Map.clear()
public Double put(Long k, Double v)
AbstractLong2DoubleFunction
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 Function<Long,Double>
put
in class AbstractLong2DoubleFunction
k
- the key.v
- the value.null
if no value was present for the given key.Map.put(Object,Object)
public Double get(Object k)
AbstractLong2DoubleFunction
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 Function<Long,Double>
get
in class AbstractLong2DoubleFunction
k
- the key.null
if no value was present for the given key.Map.get(Object)
public Double remove(Object k)
AbstractLong2DoubleFunction
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.
remove
in interface Function<Long,Double>
remove
in class AbstractLong2DoubleFunction
null
if no value was present for the given key.Map.remove(Object)
public double remove(long k)
Long2DoubleFunction
remove
in interface Long2DoubleFunction
remove
in class AbstractLong2DoubleFunction
Function.remove(Object)
public double get(long k)
Long2DoubleFunction
get
in interface Long2DoubleFunction
k
- the key.Function.get(Object)
public boolean containsKey(Object ok)
Function
Note that for some kind of functions (e.g., hashes) this method will always return true.
containsKey
in interface Function<Long,Double>
containsKey
in class AbstractLong2DoubleFunction
ok
- the key.key
.Map.containsKey(Object)