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[REBOL] Re: Function Context Query

From: rotenca:telvia:it at: 4-Dec-2001 16:54

Hi Mark,
> surely it would be just as easy to test whether local words or refinements
are set, ie with the function Unset? as >opposed to none?. Mine is only an idea, i'm not sure this is the true reason, but a none value can be used directly in expression like: if ref [...] either ref [][] An unset value would generate an error in these cases. Unset? can't be used with an unset word (the evaluation of the word gives an error), you must use: value? lit-word or unset? get/any lit-word As you can see it is not the first thing one could try :-) --- Ciao Romano