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Message: [QUOTE="Robert Klemme, post: 4652698"] I think initially I found it irritating, too. But that was just for a very short period. Nowadays I believe you hit the nail on the head: it's logically preferable. Often, code that looks up something in a Hash or other data structure will return nil if nothing is found. If you have numbers in there, code will get more complicated if also 0 can be stored , you want a 0 returned to be evaluated as a "hit" and the language would evaluate 0 as false in a boolean context. Kind regards robert [/QUOTE]