Package it.unimi.dsi.fastutil.chars
Class Char2FloatFunctions.EmptyFunction
java.lang.Object
it.unimi.dsi.fastutil.chars.AbstractChar2FloatFunction
it.unimi.dsi.fastutil.chars.Char2FloatFunctions.EmptyFunction
- All Implemented Interfaces:
Char2FloatFunction
,Function<Character,
,Float> Serializable
,Cloneable
,Function<Character,
,Float> IntToDoubleFunction
- Direct Known Subclasses:
Char2FloatMaps.EmptyMap
- Enclosing class:
Char2FloatFunctions
public static class Char2FloatFunctions.EmptyFunction
extends AbstractChar2FloatFunction
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:
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Method Summary
Modifier and TypeMethodDescriptionvoid
clear()
Removes all associations from this function (optional operation).clone()
boolean
containsKey
(char k) Returns true if this function contains a mapping for the specified key.float
Gets the default return value.void
defaultReturnValue
(float defRetValue) Sets the default return value (optional operation).boolean
float
get
(char k) Returns the value to which the given key is mapped.float
getOrDefault
(char k, float defaultValue) Returns the value associated by this function to the specified key, or give the specified value if not present.int
hashCode()
int
size()
Returns the intended number of keys in this function, or -1 if no such number exists.toString()
Methods inherited from interface it.unimi.dsi.fastutil.chars.Char2FloatFunction
andThen, andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, applyAsDouble, compose, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, containsKey, get, getOrDefault, put, put, remove, remove
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Method Details
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get
public float get(char k) Description copied from interface:Char2FloatFunction
Returns the value to which the given key is mapped.- Specified by:
get
in interfaceChar2FloatFunction
- Parameters:
k
- the key.- Returns:
- the corresponding value, or the default return value if no value was present for the given key.
- See Also:
-
getOrDefault
public float getOrDefault(char k, float defaultValue) Description copied from interface:Char2FloatFunction
Returns the value associated by this function to the specified key, or give the specified value if not present.- Specified by:
getOrDefault
in interfaceChar2FloatFunction
- Parameters:
k
- the key.defaultValue
- the value to return if not present.- Returns:
- the corresponding value, or
defaultValue
if no value was present for the given key. - See Also:
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containsKey
public boolean containsKey(char k) Description copied from interface:Char2FloatFunction
Returns true if this function contains a mapping for the specified key.Note that for some kind of functions (e.g., hashes) this method will always return true. In particular, this default implementation always returns true.
- Specified by:
containsKey
in interfaceChar2FloatFunction
- Parameters:
k
- the key.- Returns:
- true if this function associates a value to
key
. - See Also:
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defaultReturnValue
public float defaultReturnValue()Description copied from interface:Char2FloatFunction
Gets the default return value.This default implementation just return the default null value of the type (
null
for objects, 0 for scalars, false for Booleans).- Specified by:
defaultReturnValue
in interfaceChar2FloatFunction
- Overrides:
defaultReturnValue
in classAbstractChar2FloatFunction
- Returns:
- the current default return value.
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defaultReturnValue
public void defaultReturnValue(float defRetValue) Description copied from interface:Char2FloatFunction
Sets the default return value (optional operation). 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 interfaceChar2FloatFunction
- Overrides:
defaultReturnValue
in classAbstractChar2FloatFunction
- Parameters:
defRetValue
- the new default return value.- See Also:
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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. This default implementation, in particular, returns -1.
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clear
public void clear()Description copied from interface:Function
Removes all associations from this function (optional operation). -
clone
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hashCode
public int hashCode() -
equals
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toString
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