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Post Oekaki

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Ruper Registered 11/02/2009 Points 8	28th June, 2009 at 08:53:01 - How can I convert a string equation such as "1+1" to a variable which is the answer, in this case: 2? -Ruper
Muz Registered 14/02/2002 Points 6499	28th June, 2009 at 09:11:11 - In Lua? tonumber(1)+tonumber(1) The + shouldn't be in a string at all Disclaimer: Any sarcasm in my posts will not be mentioned as that would ruin the purpose. It is assumed that the reader is intelligent enough to tell the difference between what is sarcasm and what is not.
Ruper Registered 11/02/2009 Points 8	28th June, 2009 at 17:59:18 - Thanks, although that wasn't the answer I'm looking for. What I am trying to do is convert a damage calculating formula for an rpg into a number. The formulas would read something like "STREGTH+(3*DEFENSE)". What I was trying to do is replace the stats like STRENGTH and DEFENSE with the player's stats. I got that far, but then I just had an equation in the form of the string which I couldn't evaluate. Maybe I'm going about this the wrong way, but would there be a way to substitute in values and then evaluate the equation in Lua? -Ruper
Xgoff Registered 22/02/2009 Points 135	28th June, 2009 at 21:21:10 - there's probably a better way but this should work: function eval(str) return assert(loadstring("return " .. str))() end
Ruper Registered 11/02/2009 Points 8	28th June, 2009 at 22:34:13 - Thanks Xgoff! Exactly what I need. -Ruper
Xgoff Registered 22/02/2009 Points 135	28th June, 2009 at 22:50:47 - btw you may or may not actually need the "return " (the one in loadstring) string in there depending on how you're using the function if you're using if for something like 'a = eval("1+3")' then you will, but if you're doing variable assignments within the string you don't want it Edited by Xgoff

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