it.unimi.dsi.fastutil.doubles

Class Double2LongFunctions.Singleton

java.lang.Object

it.unimi.dsi.fastutil.doubles.AbstractDouble2LongFunction

it.unimi.dsi.fastutil.doubles.Double2LongFunctions.Singleton

All Implemented Interfaces:

Double2LongFunction, Function<Double,Long>, Serializable, Cloneable

Direct Known Subclasses:

Double2LongMaps.Singleton

Enclosing class:

Double2LongFunctions

public static class Double2LongFunctions.Singleton
extends AbstractDouble2LongFunction
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 double	key
static long	serialVersionUID
protected long	value

Fields inherited from class it.unimi.dsi.fastutil.doubles.AbstractDouble2LongFunction

defRetValue

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Double2LongFunctions.Singleton(double key, long value)

Method Summary

Methods

Modifier and Type	Method and Description
Object	clone()
boolean	containsKey(double k)
long	get(double 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.doubles.AbstractDouble2LongFunction

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 double key

value

protected final long value

Constructor Detail

Double2LongFunctions.Singleton

protected Double2LongFunctions.Singleton(double key,
                              long value)

Method Detail

containsKey

public boolean containsKey(double k)

Specified by:

containsKey in interface Double2LongFunction

See Also:

Function.containsKey(Object)

get

public long get(double k)

Description copied from interface: Double2LongFunction

Returns the value to which the given key is mapped.

Specified by:

get in interface Double2LongFunction

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<Double,Long>

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