it.unimi.dsi.fastutil.longs

Class Long2ReferenceFunctions.Singleton<V>

java.lang.Object

it.unimi.dsi.fastutil.longs.AbstractLong2ReferenceFunction<V>

it.unimi.dsi.fastutil.longs.Long2ReferenceFunctions.Singleton<V>

All Implemented Interfaces:

Function<Long,V>, Long2ReferenceFunction<V>, Serializable, Cloneable

Direct Known Subclasses:

Long2ReferenceMaps.Singleton

Enclosing class:

Long2ReferenceFunctions

public static class Long2ReferenceFunctions.Singleton<V>
extends AbstractLong2ReferenceFunction<V>
implements Serializable, Cloneable

An immutable class representing a type-specific singleton function.

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 long	key
static long	serialVersionUID
protected V	value

Fields inherited from class it.unimi.dsi.fastutil.longs.AbstractLong2ReferenceFunction

defRetValue

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Long2ReferenceFunctions.Singleton(long key, V value)

Method Summary

Methods

Modifier and Type	Method and Description
Object	clone()
boolean	containsKey(long k)
V	get(long k) Returns the value to which the given key is mapped.
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.longs.AbstractLong2ReferenceFunction

clear, containsKey, defaultReturnValue, defaultReturnValue, get, put, put, remove, remove

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

public static final long serialVersionUID

See Also:

Constant Field Values

key

protected final long key

value

protected final V value

Constructor Detail

Long2ReferenceFunctions.Singleton

protected Long2ReferenceFunctions.Singleton(long key,
                                 V value)

Method Detail

containsKey

public boolean containsKey(long k)

Specified by:

containsKey in interface Long2ReferenceFunction<V>

See Also:

Function.containsKey(Object)

get

public V get(long k)

Description copied from interface: Long2ReferenceFunction

Returns the value to which the given key is mapped.

Specified by:

get in interface Long2ReferenceFunction<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()

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.

Specified by:

size in interface Function<Long,V>

Returns:

the intended number of keys in this function, or -1 if that number is not available.

clone

public Object clone()

Overrides:

clone in class Object