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java.lang.Objectit.unimi.dsi.fastutil.chars.AbstractChar2ByteFunction
it.unimi.dsi.fastutil.chars.Char2ByteFunctions.EmptyFunction
public static class Char2ByteFunctions.EmptyFunction
An immutable class representing an empty type-specific function.
This class may be useful to implement your own in case you subclass a type-specific function.
Method Summary | |
---|---|
void |
clear()
Removes all associations from this function (optional operation). |
java.lang.Object |
clone()
|
boolean |
containsKey(char k)
|
byte |
defaultReturnValue()
Gets the default return value. |
void |
defaultReturnValue(byte defRetValue)
Sets the default return value. |
byte |
get(char k)
Returns the value to which the given key is mapped. |
java.lang.Byte |
get(java.lang.Object k)
Delegates to the corresponding type-specific method, taking care of returning null on a missing key. |
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.chars.AbstractChar2ByteFunction |
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containsKey, put, put, remove, remove |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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public byte get(char k)
Char2ByteFunction
get
in interface Char2ByteFunction
k
- the key.
Function.get(Object)
public boolean containsKey(char k)
containsKey
in interface Char2ByteFunction
Function.containsKey(Object)
public byte defaultReturnValue()
Char2ByteFunction
defaultReturnValue
in interface Char2ByteFunction
defaultReturnValue
in class AbstractChar2ByteFunction
public void defaultReturnValue(byte defRetValue)
Char2ByteFunction
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 Char2ByteFunction
defaultReturnValue
in class AbstractChar2ByteFunction
defRetValue
- the new default return value.Char2ByteFunction.defaultReturnValue()
public java.lang.Byte get(java.lang.Object k)
AbstractChar2ByteFunction
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.
get
in interface Function<java.lang.Character,java.lang.Byte>
get
in class AbstractChar2ByteFunction
k
- the key.
null
if no value was present for the given key.Map.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<java.lang.Character,java.lang.Byte>
public void clear()
Function
clear
in interface Function<java.lang.Character,java.lang.Byte>
clear
in class AbstractChar2ByteFunction
Map.clear()
public java.lang.Object clone()
clone
in class java.lang.Object
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