Feedback and comments on ARM proposal (original) (raw)

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 extends ForwardingIterator implements AutoRemovable { private AutoRemovingIterator(Iterator it) { this.it = it; } protected Iterator delegate() { return it; } private final Iterator 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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