Empty and logical expressions

[Mark Schonewille]

Hi Ralph,

Empty is a value too, but I wouldn't know how to evaluate it. Perhaps empty evaluates to NULL internally, which would give the same result: NULL < 0 is also true. Actually, NULL is less than any other value. Empty < 0 has been true since the beginning of HyperCard.

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Mark Schonewille

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On 8 nov 2012, at 22:03, Ralph DiMola wrote:

> I just ran down a bug because.....
> 
> (empty<0) evaluates to true. I would have thought empty is only equal to
> empty(or "") and any other logical test would be false.
> 
> Is this common knowledge or did I miss something in the docs?
>