Hello,<br><br>    1) I noticed there is no &quot;open&quot; function in Data.ByteString. So when I call writeFile or readFile is there an implicit open?<br><br>    2) For both readFile and writeFile, the first parameter is of type FilePath (which is of course alliased to just String). In any case, for Windows and POSIX OS&#39;s like Linux can read and write to a serial device like RS232 by specfiying the device path, e.g. /dev/tty01?<br>
<br><br>Thanks, Vasili<br>