Interface ThrowingIntFunction<R, E extends Exception>

Type Parameters:

R - the type of the result of the function

E - the type of the thrown checked exception

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 ThrowingIntFunction<R, E extends Exception>

Functional interface mirroring IntFunction<R> for primitive ints from the java.util.function package. This allows wrapping a exceptions in a runtime exception: WrappedException

As this adheres to the IntFunction interface, compose and andThen (as you might be familiar with from Function are not available.

Method Summary

Modifier and Type	Method	Description
R	apply(int i)
default IntFunction<Optional<R>>	lift()
static <R> IntFunction<Optional<R>>	lifted(ThrowingIntFunction<R,?> f)
static <R> IntFunction<R>	sneaky(ThrowingIntFunction<? extends R, ?> function)
default IntFunction<R>	uncheck()
static <R> IntFunction<R>	unchecked(ThrowingIntFunction<R,?> f)

Method Details

apply

R apply(int i)
 throws E

Throws:

E

uncheck

default IntFunction<R> uncheck()

unchecked

static <R> IntFunction<R> unchecked(ThrowingIntFunction<R,?> f)

lifted

static <R> IntFunction<Optional<R>> lifted(ThrowingIntFunction<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

sneaky

static <R> IntFunction<R> sneaky(ThrowingIntFunction<? extends R, ?> function)

lift

default IntFunction<Optional<R>> lift()