it.unimi.dsi.fastutil.objects

Interface ReferenceCollection<K>

All Superinterfaces:

Collection<K>, Iterable<K>, ObjectIterable<K>

All Known Subinterfaces:

ReferenceBigList<K>, ReferenceList<K>, ReferenceSet<K>, ReferenceSortedSet<K>

All Known Implementing Classes:

AbstractReferenceBigList, AbstractReferenceBigList.ReferenceSubList, AbstractReferenceCollection, AbstractReferenceList, AbstractReferenceList.ReferenceSubList, AbstractReferenceSet, AbstractReferenceSortedSet, ReferenceArrayList, ReferenceArraySet, ReferenceBigArrayBigList, ReferenceBigLists.EmptyBigList, ReferenceBigLists.ListBigList, ReferenceBigLists.Singleton, ReferenceBigLists.SynchronizedBigList, ReferenceBigLists.UnmodifiableBigList, ReferenceCollections.EmptyCollection, ReferenceCollections.IterableCollection, ReferenceCollections.SynchronizedCollection, ReferenceCollections.UnmodifiableCollection, ReferenceLinkedOpenHashSet, ReferenceLists.EmptyList, ReferenceLists.Singleton, ReferenceLists.SynchronizedList, ReferenceLists.UnmodifiableList, ReferenceOpenHashBigSet, ReferenceOpenHashSet, ReferenceSets.EmptySet, ReferenceSets.Singleton, ReferenceSets.SynchronizedSet, ReferenceSets.UnmodifiableSet, ReferenceSortedSets.EmptySet, ReferenceSortedSets.Singleton, ReferenceSortedSets.SynchronizedSortedSet, ReferenceSortedSets.UnmodifiableSortedSet

public interface ReferenceCollection<K>
extends Collection<K>, ObjectIterable<K>

A type-specific Collection; provides some additional methods that use polymorphism to avoid (un)boxing.

Additionally, this class defines strengthens (again) iterator() and defines a slightly different semantics for toArray(Object[]).

See Also:

Collection

Method Summary

Modifier and Type	Method and Description
ObjectIterator<K>	iterator() Returns a type-specific iterator on the elements of this collection.
ObjectIterator<K>	objectIterator() Deprecated. As of fastutil 5, replaced by iterator().
<T> T[]	toArray(T[] a) Returns an containing the items of this collection; the runtime type of the returned array is that of the specified array.

Methods inherited from interface java.util.Collection

add, addAll, clear, contains, containsAll, equals, hashCode, isEmpty, parallelStream, remove, removeAll, removeIf, retainAll, size, spliterator, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Method Detail

iterator

ObjectIterator<K> iterator()

Returns a type-specific iterator on the elements of this collection.

Note that this specification strengthens the one given in Iterable.iterator(), which was already strengthened in the corresponding type-specific class, but was weakened by the fact that this interface extends Collection.

Specified by:

iterator in interface Collection<K>

Specified by:

iterator in interface Iterable<K>

Specified by:

iterator in interface ObjectIterable<K>

Returns:

a type-specific iterator on the elements of this collection.

objectIterator

@Deprecated
ObjectIterator<K> objectIterator()

Deprecated. As of fastutil 5, replaced by iterator().

Returns a type-specific iterator on this elements of this collection.

See Also:

iterator()

toArray

<T> T[] toArray(T[] a)

Returns an containing the items of this collection; the runtime type of the returned array is that of the specified array.

Warning: Note that, contrarily to Collection.toArray(Object[]), this methods just writes all elements of this collection: no special value will be added after the last one.

Specified by:

toArray in interface Collection<K>

Parameters:

a - if this array is big enough, it will be used to store this collection.

Returns:

a primitive type array containing the items of this collection.

See Also:

Collection.toArray(Object[])