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--
-- ~~~ helper utils
--
-- string -> hex
function string.tohex(str)
return (str:gsub(".", function (c)
return string.format("%02X", string.byte(c))
end))
end
-- hex -> string
function string.fromhex(str)
return (str:gsub("..", function (cc)
return string.char(tonumber(cc, 16))
end))
end
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