Rednet Question

I'm just wondering if it would be possible to send more than 1 piece of information through rednet. Like instead of a message like

id,msg = rednet.receive()

it would be

id, msg, ext = rednet.receive()

where ext would contain an extra piece of information. I'm asking this because I'm making an ore handler and I need to send from one computer to another an amount and a type at the same time and check if the received value is lower than the stored value and every time I try the computer receiving says "attempt to compare string with number expected, got string"

You can use a table and serialization:
Sender:

local ore = {}
ore.type = "Iron"
ore.amount = 64
rednet.send(id, textutils.serialize(ore))

Receiver:

local id, msg = rednet.receive()
local ore = textutils.unserialize(msg)
print(ore.type, ": ", ore.amount)

And you can send lots of information inside the table.

Thank you very much. That was exactly what I needed to make it work