Package nbbrd.io.function

Interface IOFunction<T,R>

Type Parameters:

T - the type of the input to the function

R - the type of the result of the function

All Known Subinterfaces:

IOUnaryOperator<T>

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 IOFunction<T,R>

Represents a function that accepts one argument and produces a result.

Method Summary

Modifier and Type	Method	Description
default <V> @NonNull IOFunction<T,V>	andThen(@NonNull IOFunction<? super R,? extends V> after)	Returns a composed function that first applies this function to its input, and then applies the after function to the result.
R	applyWithIO(T t)	Applies this function to the given argument.
default @NonNull Function<T,R>	asUnchecked()
static <T,R> @NonNull IOFunction<T,R>	checked(@NonNull Function<T,R> func)
default <V> @NonNull IOFunction<V,R>	compose(@NonNull IOFunction<? super V,? extends T> before)	Returns a composed function that first applies the before function to its input, and then applies this function to the result.
static <T> @NonNull IOFunction<T,T>	identity()	Returns a function that always returns its input argument.
static <T,R> @NonNull IOFunction<T,R>	of(@Nullable R r)
static <T,R> @NonNull Function<T,R>	unchecked(@NonNull IOFunction<T,R> o)

Method Detail

applyWithIO

@JdkWithIO
R applyWithIO(T t)
       throws IOException

Applies this function to the given argument.

Parameters:

t - the function argument

Returns:

the function result

Throws:

IOException - if an I/O error occurs

compose

@JdkWithIO
default <V> @NonNull IOFunction<V,R> compose(@NonNull IOFunction<? super V,? extends T> before)

Returns a composed function that first applies the before function to its input, and then applies this function to the result. If evaluation of either function throws an exception, it is relayed to the caller of the composed function.

Type Parameters:

V - the type of input to the before function, and to the composed function

Parameters:

before - the function to apply before this function is applied

Returns:

a composed function that first applies the before function and then applies this function

Throws:

NullPointerException - if before is null

See Also:

andThen(IOFunction)

andThen

@JdkWithIO
default <V> @NonNull IOFunction<T,V> andThen(@NonNull IOFunction<? super R,? extends V> after)

Returns a composed function that first applies this function to its input, and then applies the after function to the result. If evaluation of either function throws an exception, it is relayed to the caller of the composed function.

Type Parameters:

V - the type of output of the after function, and of the composed function

Parameters:

after - the function to apply after this function is applied

Returns:

a composed function that first applies this function and then applies the after function

Throws:

NullPointerException - if after is null

See Also:

compose(IOFunction)

asUnchecked

default @NonNull Function<T,R> asUnchecked()

unchecked

static <T,R> @NonNull Function<T,R> unchecked(@NonNull IOFunction<T,R> o)

checked

static <T,R> @NonNull IOFunction<T,R> checked(@NonNull Function<T,R> func)

identity

@JdkWithIO
static <T> @NonNull IOFunction<T,T> identity()

Returns a function that always returns its input argument.

Type Parameters:

T - the type of the input and output objects to the function

Returns:

a function that always returns its input argument

of

static <T,R> @NonNull IOFunction<T,R> of(@Nullable R r)