it.unimi.dsi.fastutil.objects

Class Reference2ReferenceFunctions.Singleton<K,V>

java.lang.Object

it.unimi.dsi.fastutil.objects.AbstractReference2ReferenceFunction<K,V>

it.unimi.dsi.fastutil.objects.Reference2ReferenceFunctions.Singleton<K,V>

All Implemented Interfaces:

Reference2ReferenceFunction<K,V>, Serializable, Cloneable, Function<K,V>

Direct Known Subclasses:

Reference2ReferenceMaps.Singleton

Enclosing class:

Reference2ReferenceFunctions

public static class Reference2ReferenceFunctions.Singleton<K,V>
extends AbstractReference2ReferenceFunction<K,V>
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:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected K	key
protected V	value

Fields inherited from class it.unimi.dsi.fastutil.objects.AbstractReference2ReferenceFunction

defRetValue

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Singleton(K key, V value)

Method Summary

Modifier and Type	Method and Description
Object	clone()
boolean	containsKey(Object k)
V	get(Object k) Returns the value to which the given key is mapped.
int	size()

Methods inherited from class it.unimi.dsi.fastutil.objects.AbstractReference2ReferenceFunction

defaultReturnValue, defaultReturnValue

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.objects.Reference2ReferenceFunction

put, remove

Methods inherited from interface it.unimi.dsi.fastutil.Function

apply, clear

Methods inherited from interface java.util.function.Function

andThen, compose, identity

Field Detail

key

protected final K key

value

protected final V value

Constructor Detail

Singleton

protected Singleton(K key,
                    V value)

Method Detail

containsKey

public boolean containsKey(Object k)

get

public V get(Object k)

Description copied from interface: Reference2ReferenceFunction

Returns the value to which the given key is mapped.

Specified by:

get in interface Reference2ReferenceFunction<K,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)

size

public int size()

clone

public Object clone()

Overrides:

clone in class Object