AEst tablePersistence

function load(file)
  local loaded = nil

  if fs.exists(file) then
    local fh = fs.open(file, "r")
    local s = fh.readAll()
    loaded = textutils.unserialize(s)
    fh.close()
  end

  return loaded
end

function save(file, value)
  local fh = fs.open(file, "w")
  fh.write(textutils.serialize(value))
  fh.close()
end