Package it.unimi.dsi.fastutil.bytes
Class Byte2IntFunctions.Singleton
java.lang.Object
it.unimi.dsi.fastutil.bytes.AbstractByte2IntFunction
it.unimi.dsi.fastutil.bytes.Byte2IntFunctions.Singleton
- All Implemented Interfaces:
Byte2IntFunction
,Function<Byte,
,Integer> Serializable
,Cloneable
,Function<Byte,
,Integer> IntUnaryOperator
- Direct Known Subclasses:
Byte2IntMaps.Singleton
- Enclosing class:
Byte2IntFunctions
public static class Byte2IntFunctions.Singleton
extends AbstractByte2IntFunction
implements Serializable, Cloneable
An immutable class representing a type-specific singleton function. Note that the default return
value is still settable.
Note that albeit the function is immutable, its default return value may be changed.
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 TypeMethodDescriptionclone()
boolean
containsKey
(byte k) Returns true if this function contains a mapping for the specified key.int
get
(byte k) Returns the value to which the given key is mapped.int
getOrDefault
(byte k, int defaultValue) Returns the value associated by this function to the specified key, or give the specified value if not present.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.bytes.AbstractByte2IntFunction
defaultReturnValue, defaultReturnValue
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface it.unimi.dsi.fastutil.bytes.Byte2IntFunction
andThen, andThenByte, andThenChar, andThenDouble, andThenFloat, andThenInt, andThenLong, andThenObject, andThenReference, andThenShort, applyAsInt, compose, composeByte, composeChar, composeDouble, composeFloat, composeInt, composeLong, composeObject, composeReference, composeShort, containsKey, get, getOrDefault, put, put, remove, remove
Methods inherited from interface java.util.function.IntUnaryOperator
andThen, compose
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Method Details
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containsKey
public boolean containsKey(byte k) Description copied from interface:Byte2IntFunction
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 interfaceByte2IntFunction
- Parameters:
k
- the key.- Returns:
- true if this function associates a value to
key
. - See Also:
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get
public int get(byte k) Description copied from interface:Byte2IntFunction
Returns the value to which the given key is mapped.- Specified by:
get
in interfaceByte2IntFunction
- Parameters:
k
- the key.- Returns:
- the corresponding value, or the default return value if no value was present for the given key.
- See Also:
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getOrDefault
public int getOrDefault(byte k, int defaultValue) Description copied from interface:Byte2IntFunction
Returns the value associated by this function to the specified key, or give the specified value if not present.- Specified by:
getOrDefault
in interfaceByte2IntFunction
- 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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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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clone
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