ru.yandex.bolts.collection
Class CollectionsF

java.lang.Object
  ru.yandex.bolts.collection.CollectionsF

Direct Known Subclasses:

Cf

public class CollectionsF
extends Object

Utilities to create extended collections.

Author:

Stepan Koltsov

Constructor Summary

protected

CollectionsF()

Method Summary

static <E> ListF<E>	arrayList() Create extended mutable array list.
static <A> ListF<A>	arrayList(A... elements) Create extended array list of elements.
static <A> ListF<A>	arrayList(Collection<A> collection) Create extended mutable array list containing given elements.
static <A> ListF<A>	arrayList(int initialCapacity) Create array list with given capacity.
static <K,V> MapF<K,V>	concurrentHashMap() Wrapper around ConcurrentHashMap.
static <E> IteratorF<E>	emptyIterator() Empty iterator.
static <K,V> MapF<K,V>	hashMap() Create hash map.
static <K,V> MapF<K,V>	hashMap(Iterable<Tuple2<K,V>> entries) Create hash map of specified entries.
static <A> SetF<A>	hashSet() Create mutable hash set.
static <E> SetF<E>	hashSet(Collection<E> collection) Create mutable hash set of specified elements.
static <E> SetF<E>	hashSet(E... elements) Create mutable hash set of specified elements.
static <T> Function1B<Iterator<T>>	hasNextF() Iterator.hasNext() as function
static <K,V> MapF<K,V>	identityHashMap() Identity hash map.
static <E> SetF<E>	identityHashSet() Create mutable identity hash set.
static <E> SetF<E>	identityHashSet(Collection<E> elements) Create mutable identity hash set with specified elements.
static <E> SetF<E>	identityHashSet(E... elements) Create mutable identity hash set with specified elements.
static <T> Function<Iterable<T>,IteratorF<T>>	iteratorF() Iterable.iterator() as function
static <E> ListF<E>	linkedList() Create extended linked list.
static <E> ListF<E>	list() Empty immutable list.
static <E> ListF<E>	list(Collection<E> elements) Create list of elements from given collection.
static <E> ListF<E>	list(E... elements) Create list of specified elements.
static <E> ListF<E>	list(E e) Immutable singleton list.
static <E> ListF<E>	list(E e1, E e2) Immutable list with two elements.
static <A> Function2<ListF<A>,ListF<A>,ListF<A>>	listPlusF() Concatenate two lists function
static <K,V> MapF<K,V>	map() Immutable empty map.
static <K,V> MapF<K,V>	map(Collection<Tuple2<K,V>> pairs) Create map from sequence of entries
static <K,V> MapF<K,V>	map(K key, V value) Singleton map.
static <K,V> MapF<K,V>	map(K key1, V value1, K key2, V value2) Map of either 1 or 2 entries.
static <A,B> Function2<MapF<A,B>,MapF<A,B>,MapF<A,B>>	mapPlusF() MapF.plus(MapF) as function.
static ListF<Integer>	range(int startInclusive, int endExclusive) Immutable list of integer in given range.
static <T> ListF<T>	repeat(T element, int times) Immutable list of element repeated times times.
static <E> SetF<E>	set() Empty set
static <E> SetF<E>	set(Collection<E> elements) Create set of elements from collection.
static <E> SetF<E>	set(E... elements) Create set of specified elements
static <E> SetF<E>	set(E e1, E e2) Create set of specified elements.
static <E> SetF<E>	set(E e1, E e2, E e3) Create set of specified elements.
static <T> SetF<T>	set(T o) Create singleton set
static <A> Function2<SetF<A>,SetF<A>,SetF<A>>	setPlusF() Union of two sets function
static <T> Function<Collection<T>,Integer>	sizeF() Collection.size() as function
static <T> Function<Collection<T>,Integer>	sizeM() Deprecated.
static <A> SetF<A>	treeSet() Create extended tree set.
static <E> SetF<E>	treeSet(Collection<E> collection) Create tree set of specified elements.
static <E> SetF<E>	treeSet(E... elements) Create tree set of specified elements.
static <E> CollectionF<E>	wrap(Collection<E> coll) Wrap Collection.
static <E> ListF<E>	wrap(E[] array) Wrap array.
static <E> IteratorF<E>	wrap(Iterator<E> iter) Wrap Iterator.
static <E> ListF<E>	wrap(List<E> list) Wrap List.
static <K,V> MapF<K,V>	wrap(Map<K,V> map) Wrap Map.
static MapF<String,String>	wrap(Properties ps) Wrap Properties.
static <E> SetF<E>	wrap(Set<E> set) Wrap Set.
static <E> Function<Iterator<E>,IteratorF<E>>	wrapIteratorF() x(Iterator) as function
static <E> Function<Iterator<E>,IteratorF<E>>	wrapIteratorM() Deprecated.
static <E> Function<List<E>,ListF<E>>	wrapListF() x(List) as function
static <E> Function<List<E>,ListF<E>>	wrapListM() Deprecated.
static <K,V> Function<Map<K,V>,MapF<K,V>>	wrapMapF() x(Map) as function
static <K,V> Function<Map<K,V>,MapF<K,V>>	wrapMapM() Deprecated.
static <E> Function<Set<E>,SetF<E>>	wrapSetF() x(Set) as function
static <E> Function<Set<E>,SetF<E>>	wrapSetM() Deprecated.
static <E> CollectionF<E>	x(Collection<E> collection) Wrap collection
static <E> ListF<E>	x(E[] array) Wrap array.
static <E> IteratorF<E>	x(Iterator<E> iterator) Wrap iterator
static <E> ListF<E>	x(List<E> list) Wrap list
static <K,V> MapF<K,V>	x(Map<K,V> map) Wrap map
static MapF<String,String>	x(Properties properties) Wrap properties as set of String, String pairs
static <E> SetF<E>	x(Set<E> set) Wrap set

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectionsF

protected CollectionsF()

Method Detail

wrap

public static <E> ListF<E> wrap(List<E> list)

Wrap List.

See Also:

x(List)

wrap

public static <E> SetF<E> wrap(Set<E> set)

Wrap Set.

See Also:

x(Set)

wrap

public static <E> CollectionF<E> wrap(Collection<E> coll)

Wrap Collection.

See Also:

x(Collection)

wrap

public static <E> IteratorF<E> wrap(Iterator<E> iter)

Wrap Iterator.

See Also:

x(Iterator)

wrap

public static <K,V> MapF<K,V> wrap(Map<K,V> map)

Wrap Map.

See Also:

x(Map)

wrap

public static MapF<String,String> wrap(Properties ps)

Wrap Properties.

See Also:

x(Properties)

wrap

public static <E> ListF<E> wrap(E[] array)

Wrap array.

See Also:

x(Object[])

x

public static <E> IteratorF<E> x(Iterator<E> iterator)

Wrap iterator

x

public static <E> CollectionF<E> x(Collection<E> collection)

Wrap collection

x

public static <E> ListF<E> x(List<E> list)

Wrap list

x

public static <E> SetF<E> x(Set<E> set)

Wrap set

x

public static <K,V> MapF<K,V> x(Map<K,V> map)

Wrap map

x

public static MapF<String,String> x(Properties properties)

Wrap properties as set of String, String pairs

x

public static <E> ListF<E> x(E[] array)

Wrap array.

See Also:

Arrays.asList(Object...), list(Object...)

set

public static <E> SetF<E> set()

Empty set

set

public static <T> SetF<T> set(T o)

Create singleton set

set

public static <E> SetF<E> set(E e1,
                              E e2)

Create set of specified elements.

Returns:

set of either 1 or 2 elements

set

public static <E> SetF<E> set(E e1,
                              E e2,
                              E e3)

Create set of specified elements.

Returns:

set of either 1, 2 or 3 elements

set

public static <E> SetF<E> set(E... elements)

Create set of specified elements

set

public static <E> SetF<E> set(Collection<E> elements)

Create set of elements from collection.

hashSet

public static <A> SetF<A> hashSet()

Create mutable hash set.

hashSet

public static <E> SetF<E> hashSet(Collection<E> collection)

Create mutable hash set of specified elements.

hashSet

public static <E> SetF<E> hashSet(E... elements)

Create mutable hash set of specified elements.

identityHashSet

public static <E> SetF<E> identityHashSet()

Create mutable identity hash set.

identityHashSet

public static <E> SetF<E> identityHashSet(Collection<E> elements)

Create mutable identity hash set with specified elements.

identityHashSet

public static <E> SetF<E> identityHashSet(E... elements)

Create mutable identity hash set with specified elements.

treeSet

public static <A> SetF<A> treeSet()

Create extended tree set.

treeSet

public static <E> SetF<E> treeSet(Collection<E> collection)

Create tree set of specified elements.

treeSet

public static <E> SetF<E> treeSet(E... elements)

Create tree set of specified elements.

list

public static <E> ListF<E> list()

Empty immutable list.

list

public static <E> ListF<E> list(E e)

Immutable singleton list.

list

public static <E> ListF<E> list(E e1,
                                E e2)

Immutable list with two elements.

list

public static <E> ListF<E> list(E... elements)

Create list of specified elements. The resulting list is immutable.

See Also:

for real array wrapping

list

public static <E> ListF<E> list(Collection<E> elements)

Create list of elements from given collection.

arrayList

public static <E> ListF<E> arrayList()

Create extended mutable array list.

arrayList

public static <A> ListF<A> arrayList(Collection<A> collection)

Create extended mutable array list containing given elements.

arrayList

public static <A> ListF<A> arrayList(A... elements)

Create extended array list of elements.

arrayList

public static <A> ListF<A> arrayList(int initialCapacity)

Create array list with given capacity.

See Also:

ArrayList.ArrayList(int)

map

public static <K,V> MapF<K,V> map(K key,
                                  V value)

Singleton map.

map

public static <K,V> MapF<K,V> map(K key1,
                                  V value1,
                                  K key2,
                                  V value2)

Map of either 1 or 2 entries.

map

public static <K,V> MapF<K,V> map(Collection<Tuple2<K,V>> pairs)

Create map from sequence of entries

map

public static <K,V> MapF<K,V> map()

Immutable empty map.

linkedList

public static <E> ListF<E> linkedList()

Create extended linked list.

hashMap

public static <K,V> MapF<K,V> hashMap()

Create hash map.

See Also:

HashMap

identityHashMap

public static <K,V> MapF<K,V> identityHashMap()

Identity hash map.

See Also:

IdentityHashMap

hashMap

public static <K,V> MapF<K,V> hashMap(Iterable<Tuple2<K,V>> entries)

Create hash map of specified entries.

See Also:

HashMap

concurrentHashMap

public static <K,V> MapF<K,V> concurrentHashMap()

Wrapper around ConcurrentHashMap.

emptyIterator

public static <E> IteratorF<E> emptyIterator()

Empty iterator.

repeat

public static <T> ListF<T> repeat(T element,
                                  int times)

Immutable list of element repeated times times.

range

public static ListF<Integer> range(int startInclusive,
                                   int endExclusive)

Immutable list of integer in given range.

Returns:

empty list if end < start

mapPlusF

public static <A,B> Function2<MapF<A,B>,MapF<A,B>,MapF<A,B>> mapPlusF()

MapF.plus(MapF) as function.

listPlusF

public static <A> Function2<ListF<A>,ListF<A>,ListF<A>> listPlusF()

Concatenate two lists function

setPlusF

public static <A> Function2<SetF<A>,SetF<A>,SetF<A>> setPlusF()

Union of two sets function

wrapListM

public static <E> Function<List<E>,ListF<E>> wrapListM()

Deprecated.

wrapListF

public static <E> Function<List<E>,ListF<E>> wrapListF()

x(List) as function

wrapSetM

public static <E> Function<Set<E>,SetF<E>> wrapSetM()

Deprecated.

wrapSetF

public static <E> Function<Set<E>,SetF<E>> wrapSetF()

x(Set) as function

wrapMapM

public static <K,V> Function<Map<K,V>,MapF<K,V>> wrapMapM()

Deprecated.

wrapMapF

public static <K,V> Function<Map<K,V>,MapF<K,V>> wrapMapF()

x(Map) as function

wrapIteratorM

public static <E> Function<Iterator<E>,IteratorF<E>> wrapIteratorM()

Deprecated.

wrapIteratorF

public static <E> Function<Iterator<E>,IteratorF<E>> wrapIteratorF()

x(Iterator) as function

sizeM

public static <T> Function<Collection<T>,Integer> sizeM()

Deprecated.

sizeF

public static <T> Function<Collection<T>,Integer> sizeF()

Collection.size() as function

hasNextF

public static <T> Function1B<Iterator<T>> hasNextF()

Iterator.hasNext() as function

iteratorF

public static <T> Function<Iterable<T>,IteratorF<T>> iteratorF()

Iterable.iterator() as function