io_file [object]

• methods
  • open
  • close
  • read
  • write
  • seek
  • flush
  • setbuf
• read-only properties
  • [int] offset
  • [int] size
  • [bool] error
  • [bool] eof
• other features:
  • tobool = returns whether file is open or not
  • GC-safe