Interface ThrowingFunction<T, R, E extends Exception>

Type Parameters:

T - the type of the input to the function

R - the type of the result of the function

E - the type of the thrown checked exception

All Known Subinterfaces:

ThrowingUnaryOperator<T,E>

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 ThrowingFunction<T, R, E extends Exception>

Represents a function that accepts one argument and returns a value; Function might throw a checked exception instance.

Method Summary

Modifier and Type	Method	Description
default <V> ThrowingFunction<T,V,E>	andThen(ThrowingFunction<? super R, ? extends V, ? extends E> after)
R	apply(T arg)
default <V> ThrowingFunction<V,R,E>	compose(ThrowingFunction<? super V, ? extends T, ? extends E> before)
default Function<T, Optional<R>>	lift()
static <T,R> Function<T, Optional<R>>	lifted(ThrowingFunction<T,R,?> f)
static <T1,R> Function<T1,R>	sneaky(ThrowingFunction<? super T1, ? extends R, ?> function)
default Function<T,R>	uncheck()
static <T,R> Function<T,R>	unchecked(ThrowingFunction<T,R,?> f)

Method Details

apply

R apply(T arg)
 throws E

Throws:

E

lifted

static <T,R> Function<T, Optional<R>> lifted(ThrowingFunction<T,R,?> f)

Returns:

a Function that returns the result of the given function as an Optional instance. In case of a failure, empty Optional is returned

unchecked

static <T,R> Function<T,R> unchecked(ThrowingFunction<T,R,?> f)

sneaky

static <T1,R> Function<T1,R> sneaky(ThrowingFunction<? super T1, ? extends R, ?> function)

compose

default <V> ThrowingFunction<V,R,E> compose(ThrowingFunction<? super V, ? extends T, ? extends E> before)

andThen

default <V> ThrowingFunction<T,V,E> andThen(ThrowingFunction<? super R, ? extends V, ? extends E> after)

lift

default Function<T, Optional<R>> lift()

uncheck

default Function<T,R> uncheck()