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[REBOL] Re: Evaluating a maths expression in a string?

From: mat:eurogamer at: 29-Dec-2000 19:17

Heya Larry,
>>> either not error? try[result: do str][result]["code to handle error"]
I've just realised the fatal flaw with this approach. Since I allow user input to my evaluation string - there's nothing to stop them typing out rebol code. Security issue to say the least! I suppose I could filter to make sure there are only characters that fit a character set of "0123456789+-*/()" - that might do it? -- Mat Bettinson - EuroGamer's Gaming Evangelist with a Goatee |