com.github.tonivade.purefun.handler

Interface OptionalHandler<T,R>

All Superinterfaces:

Function1<T,java.util.Optional<R>>

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface OptionalHandler<T,R>
extends Function1<T,java.util.Optional<R>>

Method Summary

Modifier and Type	Method and Description
default <V> OptionalHandler<V,R>	compose(Function1<V,T> before)
default OptionalHandler<T,R>	filter(Matcher1<R> matcher)
default <V> OptionalHandler<T,V>	flatMap(OptionalHandler<R,V> mapper)
default <V> OptionalHandler<T,V>	flatten()
default <V> OptionalHandler<T,V>	map(Function1<R,V> mapper)
static <T,R> OptionalHandler<T,R>	of(Function1<T,java.util.Optional<R>> reference)
default Function1<T,R>	orElse(Producer<R> producer)

Methods inherited from interface com.github.tonivade.purefun.Function1

andThen, apply, checked, identity, liftEither, liftLeft, liftOption, liftOptional, liftRight, liftTry, of, sequence, stream

Method Detail

compose

default <V> OptionalHandler<V,R> compose(Function1<V,T> before)

Specified by:

compose in interface Function1<T,java.util.Optional<R>>

map

default <V> OptionalHandler<T,V> map(Function1<R,V> mapper)

flatMap

default <V> OptionalHandler<T,V> flatMap(OptionalHandler<R,V> mapper)

flatten

default <V> OptionalHandler<T,V> flatten()

filter

default OptionalHandler<T,R> filter(Matcher1<R> matcher)

orElse

default Function1<T,R> orElse(Producer<R> producer)

of

static <T,R> OptionalHandler<T,R> of(Function1<T,java.util.Optional<R>> reference)