com.oath.cyclops.types

Interface Filters<T>

Type Parameters:

T - Type of this Filters

All Known Subinterfaces:

BankersQueue<T>, Either<LT,RT>, Eval<T>, FilterableTransformable<T>, ImmutableList<T>, ImmutableList.None<T>, ImmutableList.Some<T>, ImmutableMap<K,V>, ImmutableQueue<T>, ImmutableQueue.None<T>, ImmutableQueue.Some<T>, ImmutableSet<T>, ImmutableSortedSet<T>, Ior<LT,RT>, IterableFilterable<T>, IterableX<T>, LazyEither<LT,RT>, LazyEither3<LT1,LT2,RT>, LazyEither4<LT1,LT2,LT3,RT>, LazyEither5<LT1,LT2,LT3,LT4,RT>, LazySeq<T>, Maybe<T>, MonadicValue<T>, Option<T>, ReactiveSeq<T>, Seq<T>, Streamable<T>, Traversable<T>

All Known Implementing Classes:

Bag, BankersQueue.Cons, BankersQueue.Nil, DifferenceList, Either.Left, Either.Right, Eval.CompletableEval, Eval.Module.Always, Eval.Module.FutureAlways, Eval.Module.Later, Future, HashMap, HashSet, IntMap, Ior.Both, Ior.Primary, Ior.Secondary, LazyEither.CompletableEither, LazyEither.Lazy, LazyEither.Left, LazyEither.Right, LazyEither3.CompletableEither3, LazyEither3.Lazy, LazyEither3.Left1, LazyEither3.Left2, LazyEither3.Right, LazyEither4.CompletableEither4, LazyEither4.Lazy, LazyEither4.Left1, LazyEither4.Left2, LazyEither4.Left3, LazyEither4.Right, LazyEither5.CompletableEither5, LazyEither5.Lazy, LazyEither5.Left1, LazyEither5.Left2, LazyEither5.Left3, LazyEither5.Left4, LazyEither5.Right, LazySeq.Cons, LazySeq.Nil, LazyString, LinkedMap, Maybe.CompletableMaybe, Maybe.Just, Maybe.Lazy, Maybe.Nothing, NonEmptyList, Option.None, Option.Some, Seq.Cons, Seq.Nil, TreeMap, TreeSet, TrieMap, TrieSet, Try, Tuple1, Vector

public interface Filters<T>

Trait that represents any class with a single 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 stream 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 stream 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