it.unimi.dsi.fastutil.ints

Class Int2IntFunctions.Singleton

java.lang.Object

it.unimi.dsi.fastutil.ints.AbstractInt2IntFunction

it.unimi.dsi.fastutil.ints.Int2IntFunctions.Singleton

All Implemented Interfaces:

Int2IntFunction, Serializable, Cloneable, Function<Integer,Integer>, IntUnaryOperator

Direct Known Subclasses:

Int2IntMaps.Singleton

Enclosing class:

Int2IntFunctions

public static class Int2IntFunctions.Singleton
extends AbstractInt2IntFunction
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 int	key
protected int	value

Fields inherited from class it.unimi.dsi.fastutil.ints.AbstractInt2IntFunction

defRetValue

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Singleton(int key, int value)

Method Summary

Modifier and Type	Method and Description
Object	clone()
boolean	containsKey(int k) Returns true if this function contains a mapping for the specified key.
int	get(int k) Returns the value to which the given key is mapped.
int	size()

Methods inherited from class it.unimi.dsi.fastutil.ints.AbstractInt2IntFunction

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.ints.Int2IntFunction

applyAsInt, containsKey, get, put, put, remove, remove

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

apply, clear

Methods inherited from interface java.util.function.Function

andThen, compose, identity

Methods inherited from interface java.util.function.IntUnaryOperator

andThen, compose, identity

Field Detail

key

protected final int key

value

protected final int value

Constructor Detail

Singleton

protected Singleton(int key,
                    int value)

Method Detail

containsKey

public boolean containsKey(int k)

Description copied from interface: Int2IntFunction

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 interface Int2IntFunction

Parameters:

k - the key.

Returns:

true if this function associates a value to key.

See Also:

Function.containsKey(Object)

get

public int get(int k)

Description copied from interface: Int2IntFunction

Returns the value to which the given key is mapped.

Specified by:

get in interface Int2IntFunction

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