openPeripherals Tables Notes - NOT CODE

--CODE NOT MEANT TO RUN, JUST EXAMPLE SNIPPETS
--for things which return 1 table (like sensor):
local tile = peripheral.wrap("some_tile")
for k,v in pairs(tile) do
  print(k)
end

--for things which return nested tables (like tanks):
tank = peripheral.wrap("back") --or w/e side your thing is on
results = tank.getTankInfo("back") --"unknown" will also work here
for k,_ in pairs(results) do
    for i,v in pairs(results[k]) do
        print(i..v)
    end
end

--for most tanks, everything will be in the first nested table, so you can:
tank = peripheral.wrap("back")
tankInfo = tank.getTankInfo("unknown")[1] --the [1] access the first table so you don't have to later

local fluidAmount = tankInfo.amount
--if no fluid, this will return nil.
--Can't do arithmetic with nil, so check if it is a nil (nil = false) and if so, set to 0
if not fluidAmount then
    fluidAmount = 0
end
print("Amount: ", fluidAmount)

local tankCapacity = tankInfo.capacity
--will always return a capacity if there is a valid tank so no correction needed
print("Capacity: ", tankCapacity)

local percent = math.round(fluidAmount/tankCapacity*100, 1) --round to nearest decimal
print("Percent Filled: ", percent)