it.unimi.dsi.fastutil.doubles

Class Double2LongFunctions

java.lang.Object

it.unimi.dsi.fastutil.doubles.Double2LongFunctions

public class Double2LongFunctions
extends Object

A class providing static methods and objects that do useful things with type-specific functions.

See Also:

Function, Collections

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Double2LongFunctions.EmptyFunction An immutable class representing an empty type-specific function.
static class	Double2LongFunctions.Singleton An immutable class representing a type-specific singleton function.
static class	Double2LongFunctions.SynchronizedFunction A synchronized wrapper class for functions.
static class	Double2LongFunctions.UnmodifiableFunction An unmodifiable wrapper class for functions.

Field Summary

Fields

Modifier and Type	Field and Description
static Double2LongFunctions.EmptyFunction	EMPTY_FUNCTION An empty type-specific function (immutable).

Method Summary

Methods

Modifier and Type	Method and Description
static Double2LongFunction	singleton(double key, long value) Returns a type-specific immutable function containing only the specified pair.
static Double2LongFunction	singleton(Double key, Long value) Returns a type-specific immutable function containing only the specified pair.
static Double2LongFunction	synchronize(Double2LongFunction f) Returns a synchronized type-specific function backed by the given type-specific function.
static Double2LongFunction	synchronize(Double2LongFunction f, Object sync) Returns a synchronized type-specific function backed by the given type-specific function, using an assigned object to synchronize.
static Double2LongFunction	unmodifiable(Double2LongFunction f) Returns an unmodifiable type-specific function backed by the given type-specific function.

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_FUNCTION

public static final Double2LongFunctions.EmptyFunction EMPTY_FUNCTION

An empty type-specific function (immutable). It is serializable and cloneable.

Method Detail

singleton

public static Double2LongFunction singleton(double key,
                            long value)

Returns a type-specific immutable function containing only the specified pair. The returned function is serializable and cloneable.

Note that albeit the returned function is immutable, its default return value may be changed.

Parameters:

key - the only key of the returned function.

value - the only value of the returned function.

Returns:

a type-specific immutable function containing just the pair <key,value>.

singleton

public static Double2LongFunction singleton(Double key,
                            Long value)

Returns a type-specific immutable function containing only the specified pair. The returned function is serializable and cloneable.

Note that albeit the returned function is immutable, its default return value may be changed.

Parameters:

key - the only key of the returned function.

value - the only value of the returned function.

Returns:

a type-specific immutable function containing just the pair <key,value>.

synchronize

public static Double2LongFunction synchronize(Double2LongFunction f)

Returns a synchronized type-specific function backed by the given type-specific function.

Parameters:

f - the function to be wrapped in a synchronized function.

Returns:

a synchronized view of the specified function.

See Also:

Collections.synchronizedMap(java.util.Map)

synchronize

public static Double2LongFunction synchronize(Double2LongFunction f,
                              Object sync)

Returns a synchronized type-specific function backed by the given type-specific function, using an assigned object to synchronize.

Parameters:

f - the function to be wrapped in a synchronized function.

sync - an object that will be used to synchronize the access to the function.

Returns:

a synchronized view of the specified function.

See Also:

Collections.synchronizedMap(java.util.Map)

unmodifiable

public static Double2LongFunction unmodifiable(Double2LongFunction f)

Returns an unmodifiable type-specific function backed by the given type-specific function.

Parameters:

f - the function to be wrapped in an unmodifiable function.

Returns:

an unmodifiable view of the specified function.

See Also:

Collections.unmodifiableMap(java.util.Map)