Help me with args

function tester( ... )
   local args = { ... }
end 

W00dyR, on 31 May 2013 - 01:30 PM said:

Please read this topic. I just explained this person how to use arguments.

You can also do something for a specific time using the os.startTimer() function.

awsumben13, on 31 May 2013 - 01:31 PM said:

I am not really sure what you're asking, but I think it is something along the lines of "how does the line args = { … } work".
What is does it capture all of the arguments passed in from the shell ( or whatever is calling it ) for example "myprogram arg1 arg2 arg3" would call myprogram with the args { [1] = "arg1", [2] = "arg2", [3] = "arg3" }
This is also the case in functions:

function tester( ... )
   local args = { ... }
end 

This would mean you could put an infinite number of args into the function when you call it and use/receive all of them

tonkku107, on 31 May 2013 - 01:35 PM said:

Would you help me do that?
I'll try my own first

Usage: cobble [A/T] [value]
A = Amount
T = Time

The way it works is just like this:

local args = {...} -- Puts the arguments into a table
local variableOne = tonumber(args[1]) -- Calls the first item in the table and changes it to a number
local variableTwo = tonumber(args[2]) -- Calls the second item in the table and changes it to a number

If the syntax for the code to work would be "dig <length> <depth>", then if I type "dig 10 5", in the code above the variableOne = 10, and variableTwo = 5. So the way it works is that it its just like typing variableOne = 10, but instead of that the code reads the users input and sets that to be the variable.

W00dyR, on 31 May 2013 - 01:49 PM said:

First of all, you never ended your if statement ;)/> The if loop you posted is pretty much a check for the input, if its incorrect, it will end the loop using "return", but it has nothing further to do with how the arguments work.

Also, I copy pasted this from the topic I linked you to, you should be able to edit what I posted there into your situation:

The way it works is just like this:

[color=#000088]local[/color][color=#000000] args [/color][color=#666600]=[/color][color=#000000] [/color][color=#666600]{...} -- Puts the arguments into a table[/color]
[color=#000088]local[/color][color=#000000] variableOne [/color][color=#666600]=[/color][color=#000000] tonumber[/color][color=#666600]([/color][color=#000000]args[/color][color=#666600][[/color][color=#006666]1[/color][color=#666600]]) -- Calls the first item in the table and changes it to a number[/color]
[color=#000088]local[/color][color=#000000] variableTwo [/color][color=#666600]=[/color][color=#000000] tonumber[/color][color=#666600]([/color][color=#000000]args[/color][color=#666600][[/color][color=#006666]2[/color][color=#666600]]) [/color][color=#666600]-- Calls the second item in the table and changes it to a number[/color]

If the syntax for the code to work would be "dig <length> <depth>", then if I type "dig 10 5", in the code above the variableOne = 10, and variableTwo = 5. So the way it works is that it its just like typing variableOne = 10, but instead of that the code reads the users input and sets that to be the variable.

local args = {...}
local mode = nil
 
local function printUsage()
  print("Usage: cobble [A/T] [value]")
  print("A = Amount")
  print("T = Time")
  return
end

if #args ~= 2 then
  printUsage()
end

if args[1] == A then
  mode = "amount"
elseif args[1] == T then
  mode = "timer"
else
  printUsage()
end

local toMine = tonumber(args[2])

local function timer()
  os.startTimer(toMine)
end

local function digFunction()
  while true do
	-- whatever happens for the digging here
  end
end

parallel.waitForAny(timer, digFunction)

if mode == "amount" then
  for i = 1, toMine do
	-- mining stuff
  end
elseif mode == "timer" then
  -- stuff that needs to happen for a certain time (posted above)
else
  return
end

W00dyR, on 31 May 2013 - 02:10 PM said:

In the spoiler the code for setting a mode with the arguments + a set variable that holds how much/how long to mine for.

Spoiler

local args = {...}
local mode = nil

local function printUsage()
  print("Usage: cobble [A/T] [value]")
  print("A = Amount")
  print("T = Time")
  return
end

if #args ~= 2 then
  printUsage()
end

if args[1] == A then
  mode = "amount"
elseif args[1] == T then
  mode = "timer"
else
  printUsage()
end

local toMine = tonumber(args[2])

The os.startTimer() could be used together with the parallel API, you can make two functions, one for mining (with a while loop), and one simple one looking something like:

local function timer()
  os.startTimer(toMine)
end

local function digFunction()
  while true do
	-- whatever happens for the digging here
  end
end

Then using the parallel api something like this would make it run both functions, while waiting for the timer to finish (since the mining never finishes due to the while loop):

parallel.waitForAny(timer, digFunction)

Using an if statement you can determine which mode to use:

if mode == "amount" then
  for i = 1, toMine do
	-- mining stuff
  end
elseif mode == "timer" then
  -- stuff that needs to happen for a certain time (posted above)
else
  return
end

W00dyR, on 31 May 2013 - 02:10 PM said:

In the spoiler the code for setting a mode with the arguments + a set variable that holds how much/how long to mine for.

Spoiler

local args = {...}
local mode = nil

local function printUsage()
  print("Usage: cobble [A/T] [value]")
  print("A = Amount")
  print("T = Time")
  return
end

if #args ~= 2 then
  printUsage()
end

if args[1] == A then
  mode = "amount"
elseif args[1] == T then
  mode = "timer"
else
  printUsage()
end

local toMine = tonumber(args[2])

The os.startTimer() could be used together with the parallel API, you can make two functions, one for mining (with a while loop), and one simple one looking something like:

local function timer()
  os.startTimer(toMine)
end

local function digFunction()
  while true do
	-- whatever happens for the digging here
  end
end

Then using the parallel api something like this would make it run both functions, while waiting for the timer to finish (since the mining never finishes due to the while loop):

parallel.waitForAny(timer, digFunction)

Using an if statement you can determine which mode to use:

if mode == "amount" then
  for i = 1, toMine do
	-- mining stuff
  end
elseif mode == "timer" then
  -- stuff that needs to happen for a certain time (posted above)
else
  return
end

tonkku107, on 01 June 2013 - 04:07 AM said:

Is the API inside the computercraft mod?

Bomb Bloke, on 01 June 2013 - 04:24 AM said:

tonkku107, on 01 June 2013 - 04:07 AM said:

Is the API inside the computercraft mod?

Yep.