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java.lang.Objectit.unimi.dsi.fastutil.objects.AbstractReference2LongFunction<K>
it.unimi.dsi.fastutil.objects.Reference2LongFunctions.Singleton<K>
public static class Reference2LongFunctions.Singleton<K>
An immutable class representing a type-specific singleton function.
This class may be useful to implement your own in case you subclass a type-specific function.
Field Summary | |
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static long |
serialVersionUID
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Method Summary | |
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Object |
clone()
|
boolean |
containsKey(Object k)
Returns true if this function contains a mapping for the specified key. |
long |
getLong(Object k)
Returns the value to which the given key is mapped. |
int |
size()
Returns the intended number of keys in this function, or -1 if no such number exists. |
Methods inherited from class it.unimi.dsi.fastutil.objects.AbstractReference2LongFunction |
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clear, defaultReturnValue, defaultReturnValue, get, put, put, remove, removeLong |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final long serialVersionUID
Method Detail |
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public boolean containsKey(Object k)
Function
Note that for some kind of functions (e.g., hashes) this method will always return true.
containsKey
in interface Function<K,Long>
k
- the key.
key
.Map.containsKey(Object)
public long getLong(Object k)
Reference2LongFunction
getLong
in interface Reference2LongFunction<K>
k
- the key.
Function.get(Object)
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.
size
in interface Function<K,Long>
public Object clone()
clone
in class Object
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