public abstract class AbstractObject2DoubleFunction<K> extends java.lang.Object implements Object2DoubleFunction<K>, java.io.Serializable
Optional operations just throw an UnsupportedOperationException
. Generic versions of accessors delegate to
the corresponding type-specific counterparts following the interface rules
(they take care of returning null
on a missing key).
This class handles directly a default return
value (including methods to access
it). Instances of classes inheriting from this class have just to return
defRetValue
to denote lack of a key in type-specific methods. The value
is serialized.
Implementing subclasses have just to provide type-specific get()
,
type-specific containsKey()
, and size()
methods.
Modifier and Type | Method and Description |
---|---|
void |
clear()
Removes all associations from this function (optional operation).
|
double |
defaultReturnValue()
Gets the default return value.
|
void |
defaultReturnValue(double rv)
Sets the default return value.
|
java.lang.Double |
get(java.lang.Object ok)
Delegates to the corresponding type-specific method, taking care of returning
null on a missing key. |
double |
put(K key,
double value)
Adds a pair to the map.
|
java.lang.Double |
put(K ok,
java.lang.Double ov)
Delegates to the corresponding type-specific method, taking care of returning
null on a missing key. |
java.lang.Double |
remove(java.lang.Object ok)
Delegates to the corresponding type-specific method, taking care of returning
null on a missing key. |
double |
removeDouble(java.lang.Object key)
Removes the mapping with the given key.
|
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
getDouble
containsKey, size
public void defaultReturnValue(double rv)
Object2DoubleFunction
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 Object2DoubleFunction<K>
rv
- the new default return value.Object2DoubleFunction.defaultReturnValue()
public double defaultReturnValue()
Object2DoubleFunction
defaultReturnValue
in interface Object2DoubleFunction<K>
public double put(K key, double value)
Object2DoubleFunction
put
in interface Object2DoubleFunction<K>
key
- the key.value
- the value.Function.put(Object,Object)
public double removeDouble(java.lang.Object key)
Object2DoubleFunction
removeDouble
in interface Object2DoubleFunction<K>
key
- the key.Function.remove(Object)
public void clear()
Function
public java.lang.Double get(java.lang.Object ok)
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.
public java.lang.Double put(K ok, java.lang.Double ov)
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.
public java.lang.Double remove(java.lang.Object ok)
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.