public static class Reference2ObjectFunctions.Singleton<K,V> extends AbstractReference2ObjectFunction<K,V> implements java.io.Serializable, java.lang.Cloneable
This class may be useful to implement your own in case you subclass a type-specific function.
Modifier and Type | Method and Description |
---|---|
java.lang.Object |
clone() |
boolean |
containsKey(java.lang.Object k)
Returns true if this function contains a mapping for the specified key.
|
V |
get(java.lang.Object k)
Returns the value associated by this function to the specified key.
|
int |
size()
Returns the intended number of keys in this function, or -1 if no such number exists.
|
clear, defaultReturnValue, defaultReturnValue, put, remove
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,V>
k
- the key.key
.Map.containsKey(Object)
public V get(java.lang.Object k)
Function
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 java.lang.Object clone()
clone
in class java.lang.Object