uk.kludje.fn.lang

Interface UIterable<T>

All Superinterfaces:

java.lang.Iterable<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
 @Generated(value="uk.kludje.annotation.processor.UncheckedFunctionalInterfaceProcessor")
public interface UIterable<T>
extends java.lang.Iterable<T>

TLDR; IMPLEMENT java.util.Iterator<T> $iterator() throws Throwable USING A LAMBDA; INVOKE java.util.Iterator<T> iterator().

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

java.util.Iterator<T> iterator() invokes java.util.Iterator<T> $iterator() and throws anything thrown by java.util.Iterator<T> $iterator().

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> UIterable<T> asUIterable(UIterable<T> t) provides a convenience method for manufacturing types as an alternative to casting.

Method Summary

Modifier and Type	Method and Description
java.util.Iterator<T>	$iterator()
static <T> UIterable<T>	asUIterable(UIterable<T> t)
default java.util.Iterator<T>	iterator()

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Method Detail

iterator

default java.util.Iterator<T> iterator()

Specified by:

iterator in interface java.lang.Iterable<T>

$iterator

java.util.Iterator<T> $iterator()
                         throws java.lang.Throwable

Throws:

java.lang.Throwable

asUIterable

static <T> UIterable<T> asUIterable(UIterable<T> t)