com.aol.cyclops2.types

Interface Filters<T>

Type Parameters:

T - Type of this Filters

All Known Subinterfaces:

AnyM<W,T>, AnyM2<W,T2,T>, AnyMSeq<W,T>, AnyMValue<W,T>, AnyMValue2<W,T2,T>, BagX<T>, CollectionX<T>, DequeX<T>, Either<LT,RT>, Either3<LT1,LT2,RT>, Either4<LT1,LT2,LT3,RT>, Either5<LT1,LT2,LT3,LT4,RT>, Eval<T>, ExtendedTraversable<T>, FilterableTransformable<T>, FluentCollectionX<T>, FoldableTransformerSeq<W,T>, FoldableTraversable<T>, FutureStream<U>, IndexedSequenceX<T>, Ior<ST,PT>, IterableFilterable<T>, LazyCollectionX<T>, LazyFluentCollectionX<T>, LinkedListX<T>, ListX<T>, MapX<K,V>, Maybe<T>, MonadicValue<T>, MutableSequenceX<T>, OrderedSetX<T>, PersistentMapX<K,V>, PersistentQueueX<T>, PersistentSetX<T>, QueueX<T>, ReactiveSeq<T>, SetX<T>, SortedSetX<T>, Streamable<T>, TransformerSeq<W,T>, Traversable<T>, VectorX<T>, Xor<ST,PT>

All Known Implementing Classes:

AbstractLazyCollection, AbstractLazyPersistentCollection, Active, CollectionXImpl, CompletableFutureT, Coproduct, Either.CompletableEither, Either.Lazy, Either.Left, Either.Right, Either3.CompletableEither3, Either3.Lazy, Either3.Left1, Either3.Left2, Either3.Right, Either4.CompletableEither4, Either4.Lazy, Either4.Left1, Either4.Left2, Either4.Left3, Either4.Right, Either5.CompletableEither5, Either5.Lazy, Either5.Left1, Either5.Left2, Either5.Left3, Either5.Left4, Either5.Right, Eval.CompletableEval, Eval.Module.Always, Eval.Module.FutureAlways, Eval.Module.Later, EvalT, ExtensiblePMapX, Future, FutureT, Ior.Both, Ior.Primary, Ior.Secondary, LazyDequeX, LazyLinkedListX, LazyListX, LazyPBagX, LazyPOrderedSetX, LazyPQueueX, LazyPSetX, LazyPVectorX, LazyQueueX, LazySetX, LazySortedSetX, ListT, MapXImpl, Maybe.CompletableMaybe, Maybe.Just, Maybe.Lazy, Maybe.Nothing, MaybeT, OptionalT, PMapXImpl, Product, StreamT, Try, Xor.Primary, Xor.Secondary, XorM, XorT

public interface Filters<T>

Trait that represents any class with a singleUnsafe argument Filter method Will coerce that method into accepting JDK 8 java.util.function.Predicates

Method Summary

Modifier and Type	Method and Description
Filters<T>	filter(java.util.function.Predicate<? super T> predicate) Keep only elements for which the supplied predicates hold e.g.
default Filters<T>	filterNot(java.util.function.Predicate<? super T> predicate) Remove any elements for which the predicate holds (inverse operation to filter) e.g.
default Filters<T>	notNull() Filter elements retaining only values which are not null
default <U> Filters<U>	ofType(java.lang.Class<? extends U> type) Keep only those elements in a reactiveStream that are of a given type.

Method Detail

filter

Filters<T> filter(java.util.function.Predicate<? super T> predicate)

Keep only elements for which the supplied predicates hold e.g.

  
   
     of(1,2,3).filter(i->i>2);
     
     //[3]
   
 
 

Parameters:

predicate - to filter elements by, retaining matches

Returns:

Filters with elements removed where the predicate does not hold

ofType

default <U> Filters<U> ofType(java.lang.Class<? extends U> type)

Keep only those elements in a reactiveStream that are of a given type.

  
 
 // (1, 2, 3) ReactiveSeq.of(1, "a", 2, "b",3).ofType(Integer.class)
 
 
 

filterNot

default Filters<T> filterNot(java.util.function.Predicate<? super T> predicate)

Remove any elements for which the predicate holds (inverse operation to filter) e.g.

  
   
     of(1,2,3).filter(i->i>2);
     
     //[1,2]
   
 
 

Parameters:

predicate - to filter elements by, retaining matches

Returns:

Filters with elements removed where the predicate does not hold

notNull

default Filters<T> notNull()

Filter elements retaining only values which are not null

  
 
   of(1,2,null,4).nonNull();
 
   //[1,2,4]
   
 
 

Returns:

Filters with nulls removed