org.apache.commons.io.function

Interface IOQuadFunction<T,U,V,W,R>

Type Parameters:

T - the type of the first argument to the function

U - the type of the second argument to the function

V - the type of the third argument to the function

W - the type of the fourth argument to the function

R - the type of the result of the function

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 IOQuadFunction<T,U,V,W,R>

Represents a function that accepts four arguments and produces a result. This is the four-arity specialization of IOFunction.

This is a functional interface whose functional method is apply(Object, Object, Object, Object).

Since:

2.12.0

See Also:

Function

Method Summary

Modifier and Type	Method and Description
default <X> IOQuadFunction<T,U,V,W,X>	andThen(IOFunction<? super R,? extends X> after) Creates a composed function that first applies this function to its input, and then applies the after function to the result.
R	apply(T t, U u, V v, W w) Applies this function to the given arguments.

Method Detail

andThen

default <X> IOQuadFunction<T,U,V,W,X> andThen(IOFunction<? super R,? extends X> after)

Creates 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:

X - 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:

java.lang.NullPointerException - if after is null

apply

R apply(T t,
        U u,
        V v,
        W w)
 throws java.io.IOException

Applies this function to the given arguments.

Parameters:

t - the first function argument

u - the second function argument

v - the third function argument

w - the fourth function argument

Returns:

the function result

Throws:

java.io.IOException - if an I/O error occurs.