it.unimi.dsi.fastutil.longs

Class LongLists

java.lang.Object

it.unimi.dsi.fastutil.longs.LongLists

public class LongLists
extends Object

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

See Also:

Collections

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	LongLists.EmptyList An immutable class representing an empty type-specific list.
static class	LongLists.Singleton An immutable class representing a type-specific singleton list.
static class	LongLists.SynchronizedList A synchronized wrapper class for lists.
static class	LongLists.UnmodifiableList An unmodifiable wrapper class for lists.

Field Summary

Fields

Modifier and Type	Field and Description
static LongLists.EmptyList	EMPTY_LIST An empty list (immutable).

Method Summary

Methods

Modifier and Type	Method and Description
static LongList	shuffle(LongList l, Random random) Shuffles the specified list using the specified pseudorandom number generator.
static LongList	singleton(long element) Returns a type-specific immutable list containing only the specified element.
static LongList	singleton(Object element) Returns a type-specific immutable list containing only the specified element.
static LongList	synchronize(LongList l) Returns a synchronized type-specific list backed by the given type-specific list.
static LongList	synchronize(LongList l, Object sync) Returns a synchronized type-specific list backed by the given type-specific list, using an assigned object to synchronize.
static LongList	unmodifiable(LongList l) Returns an unmodifiable type-specific list backed by the given type-specific list.

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_LIST

public static final LongLists.EmptyList EMPTY_LIST

An empty list (immutable). It is serializable and cloneable.

The class of this objects represent an abstract empty list that is a sublist of any type of list. Thus, EMPTY_LIST may be assigned to a variable of any (sorted) type-specific list.

Method Detail

shuffle

public static LongList shuffle(LongList l,
               Random random)

Shuffles the specified list using the specified pseudorandom number generator.

Parameters:

l - the list to be shuffled.

random - a pseudorandom number generator (please use a XorShift* generator).

Returns:

l.

singleton

public static LongList singleton(long element)

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

Parameters:

element - the only element of the returned list.

Returns:

a type-specific immutable list containing just element.

singleton

public static LongList singleton(Object element)

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

Parameters:

element - the only element of the returned list.

Returns:

a type-specific immutable list containing just element.

synchronize

public static LongList synchronize(LongList l)

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

Parameters:

l - the list to be wrapped in a synchronized list.

Returns:

a synchronized view of the specified list.

See Also:

Collections.synchronizedList(List)

synchronize

public static LongList synchronize(LongList l,
                   Object sync)

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

Parameters:

l - the list to be wrapped in a synchronized list.

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

Returns:

a synchronized view of the specified list.

See Also:

Collections.synchronizedList(List)

unmodifiable

public static LongList unmodifiable(LongList l)

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

Parameters:

l - the list to be wrapped in an unmodifiable list.

Returns:

an unmodifiable view of the specified list.

See Also:

Collections.unmodifiableList(List)