enumj

Class Reversible

java.lang.Object

enumj.Reversible

final class Reversible
extends Object

Utility class containing methods for Enumerable.

See Also:

Enumerable

Constructor Summary

Constructors

Constructor and Description
Reversible()

Method Summary

Modifier and Type	Method and Description
static <E> Enumerator<E>	distinct(Enumerator<E> source, boolean reversed) Applies a Enumerator.distinct() operation upon source, in reverse if necessary.
(package private) static <E,R> Enumerator<R>	map(Enumerator<E> source, BiFunction<? super E,? super Long,? extends R> mapper, boolean reversed) Applies a Enumerator.map(BiFunction) operation upon source, in reverse if necessary.
static <E> Enumerator<E>	peek(Enumerator<E> source, Consumer<? super E> action, boolean reversed) Applies a Enumerator.peek(Consumer) operation upon source, in reverse if necessary.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Reversible

Reversible()

Method Detail

distinct

public static <E> Enumerator<E> distinct(Enumerator<E> source,
                                         boolean reversed)

Applies a Enumerator.distinct() operation upon source, in reverse if necessary.

Type Parameters:

E - type of enumerated elements.

Parameters:

source - Enumerator to apply the operation on.

reversed - true if the operation is applied in reverse, false otherwise.

Returns:

distinct Enumerator.

map

static <E,R> Enumerator<R> map(Enumerator<E> source,
                               BiFunction<? super E,? super Long,? extends R> mapper,
                               boolean reversed)

Applies a Enumerator.map(BiFunction) operation upon source, in reverse if necessary.

Type Parameters:

E - type of unmapped enumerated elements.

R - type of mapped enumerated elements.

Parameters:

source - Enumerator to apply the operation on.

mapper - BiFunction to apply.

reversed - true if the operation is applied in reverse, false otherwise.

Returns:

mapped Enumerator.

peek

public static <E> Enumerator<E> peek(Enumerator<E> source,
                                     Consumer<? super E> action,
                                     boolean reversed)

Applies a Enumerator.peek(Consumer) operation upon source, in reverse if necessary.

Type Parameters:

E - type of enumerated elements.

Parameters:

source - Enumerator to apply the operation on.

action - Consumer to apply.

reversed - true if the operation is applied in reverse, false otherwise.

Returns:

picked Enumerator.