public abstract class AbstractChar2DoubleFunction extends java.lang.Object implements Char2DoubleFunction, 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).
|
boolean |
containsKey(java.lang.Object ok)
Returns true if this function contains a mapping for the specified key.
|
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. |
java.lang.Double |
put(java.lang.Character ok,
java.lang.Double ov)
Delegates to the corresponding type-specific method, taking care of returning
null on a missing key. |
double |
put(char key,
double value)
Adds a pair to the map.
|
double |
remove(char key)
Removes the mapping with the given 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. |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
containsKey, get
public void defaultReturnValue(double rv)
Char2DoubleFunction
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 Char2DoubleFunction
rv
- the new default return value.Char2DoubleFunction.defaultReturnValue()
public double defaultReturnValue()
Char2DoubleFunction
defaultReturnValue
in interface Char2DoubleFunction
public double put(char key, double value)
Char2DoubleFunction
put
in interface Char2DoubleFunction
key
- the key.value
- the value.Function.put(Object,Object)
public double remove(char key)
Char2DoubleFunction
remove
in interface Char2DoubleFunction
key
- the key.Function.remove(Object)
public void clear()
Function
public boolean containsKey(java.lang.Object ok)
Function
Note that for some kind of functions (e.g., hashes) this method will always return true.
containsKey
in interface Function<java.lang.Character,java.lang.Double>
ok
- the key.key
.Map.containsKey(Object)
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(java.lang.Character 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.