Package org.cactoos.iterable

Class Filtered<X>

java.lang.Object

org.cactoos.iterable.IterableEnvelope<X>

org.cactoos.iterable.Filtered<X>

Type Parameters:

X - Type of item

All Implemented Interfaces:

Iterable<X>

public final class Filtered<X>
extends IterableEnvelope<X>

Filtered iterable.

You can use it in order to create a declarative/lazy version of a filtered collection/iterable. For example, this code will create a list of two strings "hello" and "world":

 Iterable<String> list = new Filtered<>(
   new ArrayOf<>(
     "hey", "hello", "world"
   ),
   input -> input.length() > 4
 );
 

There is no thread-safety guarantee.

Since:

0.1

See Also:

Filtered

Constructor Summary

Constructors

Constructor	Description
Filtered(Iterable<? extends X> src, Func<? super X,Scalar<Boolean>> fnc)	Ctor.
Filtered(Func<? super X,Boolean> fnc, Iterable<? extends X> src)	Ctor.
Filtered(Func<? super X,Boolean> fnc, X... src)	Ctor.

Method Summary

Methods inherited from class org.cactoos.iterable.IterableEnvelope

equals, hashCode, iterator, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

Filtered

@SafeVarargs
public Filtered(Func<? super X,Boolean> fnc,
                X... src)

Ctor.

Parameters:

fnc - Predicate

src - Source iterable

Since:

0.21

Filtered

public Filtered(Func<? super X,Boolean> fnc,
                Iterable<? extends X> src)

Ctor.

Parameters:

fnc - Predicate

src - Source iterable

Filtered

public Filtered(Iterable<? extends X> src,
                Func<? super X,Scalar<Boolean>> fnc)

Ctor.

Parameters:

src - Source iterable

fnc - Predicate