Feedback and comments on ARM proposal
Tim Peierls
tim at peierls.net
Sat Mar 21 09:07:58 PDT 2009
On Sat, Mar 21, 2009 at 11:30 AM, Mark Mahieu <markmahieu at googlemail.com>wrote:
> For example, I couldn't get ARM to call Iterator.remove() at the end of my
> try blocks :)
>
Sure you could! You just have to really mean it. :-)
public class AutoRemovingIterator<T> extends ForwardingIterator<T>
implements AutoRemovable {
private AutoRemovingIterator(Iterator<T> it) { this.it = it; }
protected Iterator<T> delegate() { return it; }
private final Iterator<T> it;
public static AutoRemovingIterator<T> autoRemove(Iterator<T> it) {
return new AutoRemovingIterator<T>(it);
}
}
// In other code, with autoRemove statically imported:
try (AutoRemovingIterator<Element> elementIterator :
autoRemove(elements.iterator())) {
// Use elementIterator ... when you're done,
elementIterator.remove() will be called.
}
Not that this contributes anything useful to the discussion.
--tim
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