Package it.unimi.dsi.fastutil.bytes
Class Byte2ByteFunctions.Singleton
- java.lang.Object
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- it.unimi.dsi.fastutil.bytes.AbstractByte2ByteFunction
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- it.unimi.dsi.fastutil.bytes.Byte2ByteFunctions.Singleton
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- All Implemented Interfaces:
Byte2ByteFunction
,Function<java.lang.Byte,java.lang.Byte>
,java.io.Serializable
,java.lang.Cloneable
,java.util.function.Function<java.lang.Byte,java.lang.Byte>
,java.util.function.IntUnaryOperator
- Direct Known Subclasses:
Byte2ByteMaps.Singleton
- Enclosing class:
- Byte2ByteFunctions
public static class Byte2ByteFunctions.Singleton extends AbstractByte2ByteFunction implements java.io.Serializable, java.lang.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:
- Serialized Form
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.Object
clone()
boolean
containsKey(byte k)
Returns true if this function contains a mapping for the specified key.byte
get(byte k)
Returns the value to which the given key is mapped.byte
getOrDefault(byte k, byte 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.AbstractByte2ByteFunction
defaultReturnValue, defaultReturnValue
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Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface it.unimi.dsi.fastutil.bytes.Byte2ByteFunction
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
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Method Detail
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containsKey
public boolean containsKey(byte k)
Description copied from interface:Byte2ByteFunction
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 interfaceByte2ByteFunction
- Parameters:
k
- the key.- Returns:
- true if this function associates a value to
key
. - See Also:
Function.containsKey(Object)
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get
public byte get(byte k)
Description copied from interface:Byte2ByteFunction
Returns the value to which the given key is mapped.- Specified by:
get
in interfaceByte2ByteFunction
- 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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getOrDefault
public byte getOrDefault(byte k, byte defaultValue)
Description copied from interface:Byte2ByteFunction
Returns the value associated by this function to the specified key, or give the specified value if not present.- Specified by:
getOrDefault
in interfaceByte2ByteFunction
- 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:
Function.getOrDefault(Object, 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. This default implementation, in particular, returns -1.
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clone
public java.lang.Object clone()
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