Idiomatic way to use for-each loop given an iterator?

Question

When the enhanced for loop (foreach loop) was added to Java, it was made to work with a target of either an array or Iterable.

for ( T item : /*         


        

Answer 1

I suggest to create a helper class with factory methods that you can use like this:

import static Iter.*;

for( Element i : iter(elements) ) {
}

for( Element i : iter(o, Element.class) ) {
}

As a next step, the return type of iter() could be a fluent interface so you can do:

for( Element i : iter(elements).reverse() ) {
}

or maybe

for( Element i : reverse(elements) ) {
}

You should also have a look at op4j which solves many of these problems with a very nice API.