ComputerCraft Tutorial: msg_receiver_test4

-- ##############################
-- msg_receiver test4

rednet.open("right")

function hevo()
  print("hevohevo!")
end

while true do
  local sender_id, message, distance = rednet.receive()

  local func = loadstring(message)
  setfenv(func, getfenv()) -- change func's environment(_G) to current one.
  local status, err = pcall(func)

  if status then -- success
    print("#",sender_id,": ",message)
  else -- wrong string
    print("(error) #",sender_id,": ",message)
  end
end