uk.kludje.fn.function

Interface UToLongBiFunction<T,U>

All Superinterfaces:

java.util.function.ToLongBiFunction<T,U>

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 UToLongBiFunction<T,U>
extends java.util.function.ToLongBiFunction<T,U>

TLDR; IMPLEMENT long $applyAsLong(T arg0, U arg1) throws Throwable USING A LAMBDA; INVOKE long applyAsLong(T arg0, U arg1).

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

long applyAsLong(T arg0, U arg1) invokes long $applyAsLong(T arg0, U arg1) and throws anything thrown by long $applyAsLong(T arg0, U arg1).

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 <T, U> UToLongBiFunction<T, U> asUToLongBiFunction(UToLongBiFunction<T, U> t) provides a convenience method for manufacturing types as an alternative to casting.

Method Summary

Modifier and Type	Method and Description
long	$applyAsLong(T arg0, U arg1)
default long	applyAsLong(T arg0, U arg1)
static <T,U> UToLongBiFunction<T,U>	asUToLongBiFunction(UToLongBiFunction<T,U> t)

Method Detail

applyAsLong

default long applyAsLong(T arg0,
                         U arg1)

Specified by:

applyAsLong in interface java.util.function.ToLongBiFunction<T,U>

$applyAsLong

long $applyAsLong(T arg0,
                  U arg1)
           throws java.lang.Throwable

Throws:

java.lang.Throwable

asUToLongBiFunction

static <T,U> UToLongBiFunction<T,U> asUToLongBiFunction(UToLongBiFunction<T,U> t)