com.aol.cyclops.types

Interface FilterableFunctor<T>

Type Parameters:

T - Data type of the element(s) in this FilterableFunctor

All Superinterfaces:

Filterable<T>, Functor<T>

All Known Subinterfaces:

AnyMSeq<T>, FoldableTransformerSeq<T>, LazyFutureStream<U>, ListT<T>, ReactiveSeq<T>, SetT<T>, StreamableT<T>, StreamT<T>

All Known Implementing Classes:

AnyMSeqImpl, LazyFutureStreamImpl, ListTSeq, ListTValue, ReactiveSeqImpl, SetTSeq, SetTValue, StreamableTSeq, StreamableTValue, StreamTSeq, StreamTValue

public interface FilterableFunctor<T>
extends Filterable<T>, Functor<T>

Represents a Functor that is also Filterable (e.g. a Stream or Optional type)

Method Summary

Modifier and Type	Method and Description
FilterableFunctor<T>	filter(java.util.function.Predicate<? super T> fn) Keep only elements for which the supplied predicates hold e.g.
<R> FilterableFunctor<R>	map(java.util.function.Function<? super T,? extends R> fn) Transform this functor using the supplied transformation function

Methods inherited from interface com.aol.cyclops.types.Filterable

filterNot, notNull, ofType

Methods inherited from interface com.aol.cyclops.types.Functor

cast, patternMatch, peek, trampoline

Method Detail

filter

FilterableFunctor<T> filter(java.util.function.Predicate<? super T> fn)

Description copied from interface: Filterable

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

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

Specified by:

filter in interface Filterable<T>

Parameters:

fn - to filter elements by, retaining matches

Returns:

Filterable with elements removed where the predicate does not hold

map

<R> FilterableFunctor<R> map(java.util.function.Function<? super T,? extends R> fn)

Description copied from interface: Functor

Transform this functor using the supplied transformation function

  
  
  
    of(1,2,3).map(i->i*2)
    
    //[2,4,6]
  
 
 

Specified by:

map in interface Functor<T>

Parameters:

fn - Transformation function

Returns:

Transformed Functor