Class Char2ObjectFunctions.EmptyFunction<V>
- java.lang.Object
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- org.codelibs.jhighlight.fastutil.chars.AbstractChar2ObjectFunction<V>
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- org.codelibs.jhighlight.fastutil.chars.Char2ObjectFunctions.EmptyFunction<V>
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- All Implemented Interfaces:
Serializable
,Cloneable
,Char2ObjectFunction<V>
,Function<Character,V>
- Enclosing class:
- Char2ObjectFunctions
public static class Char2ObjectFunctions.EmptyFunction<V> extends AbstractChar2ObjectFunction<V> implements Serializable, Cloneable
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.
- See Also:
- Serialized Form
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Field Summary
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Fields inherited from class org.codelibs.jhighlight.fastutil.chars.AbstractChar2ObjectFunction
defRetValue
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Constructor Summary
Constructors Modifier Constructor Description protected
EmptyFunction()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
clear()
Removes all associations from this function (optional operation).Object
clone()
boolean
containsKey(char k)
V
defaultReturnValue()
Gets the default return value.void
defaultReturnValue(V defRetValue)
Sets the default return value.V
get(char k)
Returns the value to which the given key is mapped.V
get(Object k)
Delegates to the corresponding type-specific method, taking care of returningnull
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 org.codelibs.jhighlight.fastutil.chars.AbstractChar2ObjectFunction
containsKey, put, put, remove, remove
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Method Detail
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get
public V get(char k)
Description copied from interface:Char2ObjectFunction
Returns the value to which the given key is mapped.- Specified by:
get
in interfaceChar2ObjectFunction<V>
- Parameters:
k
- the key.- Returns:
- the corresponding value, or the default return value if no value was present for the given key.
- See Also:
Function.get(Object)
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containsKey
public boolean containsKey(char k)
- Specified by:
containsKey
in interfaceChar2ObjectFunction<V>
- See Also:
Function.containsKey(Object)
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defaultReturnValue
public V defaultReturnValue()
Description copied from interface:Char2ObjectFunction
Gets the default return value.- Specified by:
defaultReturnValue
in interfaceChar2ObjectFunction<V>
- Overrides:
defaultReturnValue
in classAbstractChar2ObjectFunction<V>
- Returns:
- the current default return value.
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defaultReturnValue
public void defaultReturnValue(V defRetValue)
Description copied from interface:Char2ObjectFunction
Sets the default return value. This value must be returned by type-specific versions ofget()
,put()
andremove()
to denote that the map does not contain the specified key. It must be 0/false
/null
by default.- Specified by:
defaultReturnValue
in interfaceChar2ObjectFunction<V>
- Overrides:
defaultReturnValue
in classAbstractChar2ObjectFunction<V>
- Parameters:
defRetValue
- the new default return value.- See Also:
Char2ObjectFunction.defaultReturnValue()
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get
public V get(Object k)
Description copied from class:AbstractChar2ObjectFunction
Delegates to the corresponding type-specific method, taking care of returningnull
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.- Specified by:
get
in interfaceFunction<Character,V>
- Overrides:
get
in classAbstractChar2ObjectFunction<V>
- Parameters:
k
- the key.- Returns:
- the corresponding value, or
null
if no value was present for the given key. - See Also:
Map.get(Object)
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size
public int size()
Description copied from interface:Function
Returns the intended number of keys in this function, or -1 if no such number exists.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.
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clear
public void clear()
Description copied from interface:Function
Removes all associations from this function (optional operation).- Specified by:
clear
in interfaceFunction<Character,V>
- Overrides:
clear
in classAbstractChar2ObjectFunction<V>
- See Also:
Map.clear()
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