uk.kludje.fn.nary

Interface UTetraConsumer<A,B,C,D>

All Superinterfaces:

TetraConsumer<A,B,C,D>

Functional Interface:

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

@FunctionalInterface
 @Generated(value="uk.kludje.annotation.processor.UncheckedFunctionalInterfaceProcessor")
public interface UTetraConsumer<A,B,C,D>
extends TetraConsumer<A,B,C,D>

TLDR; IMPLEMENT void $accept(A a, B b, C c, D d) throws Throwable USING A LAMBDA; INVOKE void accept(A a, B b, C c, D d).

A functional interface for handling checked exceptions. See parent type for interface intent.

void accept(A a, B b, C c, D d) invokes void $accept(A a, B b, C c, D d) and throws anything thrown by void $accept(A a, B b, C c, D d).

General example using java.lang.Runnable that reduces 11 lines to a single line. Call someMethodThatThrowsException in throwsNothing:

 public void someMethodThatThrowsException() throws IOException {
   // I/O functionality
 }

 public void throwsNothing(Runnable r) {
   r.run();
 }
 

Before:

 public void yourMethod() throws IOException {
   try {
     throwsNothing(() -> {
       try {
         someMethodThatThrowsException();
       } catch (IOException e) {
         throw new SomeWrapperException(e);
       }
     });
   } catch(SomeWrapperException w) {
     throw (IOException) w.getCause();
   }
 }
 

After:

 public void yourMethod() throws IOException {
   throwsNothing((URunnable) this::someMethodThatThrowsException);
 }
 

Method public static <A, B, C, D> UTetraConsumer<A, B, C, D> asUTetraConsumer(UTetraConsumer<A, B, C, D> t) provides a convenience method for manufacturing types as an alternative to casting.

Method Summary

Modifier and Type	Method and Description
void	$accept(A a, B b, C c, D d)
default void	accept(A a, B b, C c, D d)
static <A,B,C,D> UTetraConsumer<A,B,C,D>	asUTetraConsumer(UTetraConsumer<A,B,C,D> t)

Method Detail

accept

default void accept(A a,
                    B b,
                    C c,
                    D d)

Specified by:

accept in interface TetraConsumer<A,B,C,D>

$accept

void $accept(A a,
             B b,
             C c,
             D d)
      throws java.lang.Throwable

Throws:

java.lang.Throwable

asUTetraConsumer

static <A,B,C,D> UTetraConsumer<A,B,C,D> asUTetraConsumer(UTetraConsumer<A,B,C,D> t)