it.unimi.dsi.fastutil.longs

Class LongSets

java.lang.Object

it.unimi.dsi.fastutil.longs.LongSets

public final class LongSets
extends java.lang.Object

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

See Also:

Collections

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	LongSets.EmptySet An immutable class representing the empty set and implementing a type-specific set interface.
static class	LongSets.Singleton An immutable class representing a type-specific singleton set.
static class	LongSets.SynchronizedSet A synchronized wrapper class for sets.
static class	LongSets.UnmodifiableSet An unmodifiable wrapper class for sets.

Field Summary

Fields

Modifier and Type	Field and Description
static LongSets.EmptySet	EMPTY_SET An empty set (immutable).

Method Summary

Modifier and Type	Method and Description
static LongSet	emptySet() Returns an empty set (immutable).
static LongSet	from(long from) Returns an unmodifiable type-specific set containing elements greater than or equal to a given element.
static LongSet	fromTo(long from, long to) Returns an unmodifiable type-specific set containing elements in the given range.
static LongSet	singleton(long element) Returns a type-specific immutable set containing only the specified element.
static LongSet	singleton(java.lang.Long element) Returns a type-specific immutable set containing only the specified element.
static LongSet	synchronize(LongSet s) Returns a synchronized type-specific set backed by the given type-specific set.
static LongSet	synchronize(LongSet s, java.lang.Object sync) Returns a synchronized type-specific set backed by the given type-specific set, using an assigned object to synchronize.
static LongSet	to(long to) Returns an unmodifiable type-specific set containing elements smaller than a given element.
static LongSet	unmodifiable(LongSet s) Returns an unmodifiable type-specific set backed by the given type-specific set.

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_SET

public static final LongSets.EmptySet EMPTY_SET

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

Method Detail

emptySet

public static LongSet emptySet()

Returns an empty set (immutable). It is serializable and cloneable.

This method provides a typesafe access to EMPTY_SET.

Returns:

an empty set (immutable).

singleton

public static LongSet singleton(long element)

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

Parameters:

element - the only element of the returned set.

Returns:

a type-specific immutable set containing just element.

singleton

public static LongSet singleton(java.lang.Long element)

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

Parameters:

element - the only element of the returned set.

Returns:

a type-specific immutable set containing just element.

synchronize

public static LongSet synchronize(LongSet s)

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

Parameters:

s - the set to be wrapped in a synchronized set.

Returns:

a synchronized view of the specified set.

See Also:

Collections.synchronizedSet(Set)

synchronize

public static LongSet synchronize(LongSet s,
                                  java.lang.Object sync)

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

Parameters:

s - the set to be wrapped in a synchronized set.

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

Returns:

a synchronized view of the specified set.

See Also:

Collections.synchronizedSet(Set)

unmodifiable

public static LongSet unmodifiable(LongSet s)

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

Parameters:

s - the set to be wrapped in an unmodifiable set.

Returns:

an unmodifiable view of the specified set.

See Also:

Collections.unmodifiableSet(Set)

fromTo

public static LongSet fromTo(long from,
                             long to)

Returns an unmodifiable type-specific set containing elements in the given range.

Parameters:

from - the starting element (lower bound) of the set (inclusive).

to - the ending element (upper bound) of the set (exclusive).

Returns:

an unmodifiable set containing the elements in the given range.

from

public static LongSet from(long from)

Returns an unmodifiable type-specific set containing elements greater than or equal to a given element.

Parameters:

from - the starting element (lower bound) of the set (inclusive).

Returns:

an unmodifiable set containing the elements greater than or equal to from.

to

public static LongSet to(long to)

Returns an unmodifiable type-specific set containing elements smaller than a given element.

Parameters:

to - the ending element (upper bound) of the set (exclusive).

Returns:

an unmodifiable set containing the elements smaller than to.