hash = function(input) input = tostring(input); local h = 0 local len = string.len(input) local max = 2147483647 local min = -2147483648 local cycle = 4294967296 for i=1, len do h = 31 * h + string.byte(string.sub(input, i, i)); while h > max do h = h - cycle end while h < min do h = h + cycle end end return h end
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