public static class Object2DoubleFunctions.SynchronizedFunction<K> extends AbstractObject2DoubleFunction<K> implements java.io.Serializable
Modifier and Type | Method and Description |
---|---|
void |
clear()
Removes all associations from this function (optional operation).
|
boolean |
containsKey(java.lang.Object k)
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.
|
java.lang.Double |
get(java.lang.Object k)
Delegates to the corresponding type-specific method, taking care of returning
null on a missing key. |
double |
getDouble(java.lang.Object k)
Returns the value to which the given key is mapped.
|
double |
put(K k,
double v)
Adds a pair to the map.
|
java.lang.Double |
put(K k,
java.lang.Double v)
Delegates to the corresponding type-specific method, taking care of returning
null on a missing key. |
java.lang.Double |
remove(java.lang.Object k)
Delegates to the corresponding type-specific method, taking care of returning
null on a missing key. |
double |
removeDouble(java.lang.Object k)
Removes the mapping with the given key.
|
int |
size()
Returns the intended number of keys in this function, or -1 if no such number exists.
|
java.lang.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(java.lang.Object k)
Function
Note that for some kind of functions (e.g., hashes) this method will always return true.
containsKey
in interface Function<K,java.lang.Double>
k
- the key.key
.Map.containsKey(Object)
public double defaultReturnValue()
Object2DoubleFunction
defaultReturnValue
in interface Object2DoubleFunction<K>
defaultReturnValue
in class AbstractObject2DoubleFunction<K>
public void defaultReturnValue(double defRetValue)
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>
defaultReturnValue
in class AbstractObject2DoubleFunction<K>
defRetValue
- the new default return value.Object2DoubleFunction.defaultReturnValue()
public double put(K k, double v)
Object2DoubleFunction
put
in interface Object2DoubleFunction<K>
put
in class AbstractObject2DoubleFunction<K>
k
- the key.v
- the value.Function.put(Object,Object)
public void clear()
Function
public java.lang.String toString()
toString
in class java.lang.Object
public java.lang.Double put(K k, java.lang.Double v)
AbstractObject2DoubleFunction
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 get(java.lang.Object k)
AbstractObject2DoubleFunction
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 k)
AbstractObject2DoubleFunction
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 double removeDouble(java.lang.Object k)
Object2DoubleFunction
removeDouble
in interface Object2DoubleFunction<K>
removeDouble
in class AbstractObject2DoubleFunction<K>
k
- the key.Function.remove(Object)
public double getDouble(java.lang.Object k)
Object2DoubleFunction
getDouble
in interface Object2DoubleFunction<K>
k
- the key.Function.get(Object)