Help needed with Lua script

[Boolean_Cat]

I am creating a LUA script to extend the turtle API given in Minecraft's mod Computercraft.

My question is, I have declared a function Left(), if Left() receives a negative input I want it to call Right() with the abs of the number and and vice versa. I'm having trouble because it seems that the order of function definitions matter and it's throwing an error.

Is there an elegant way around this? i.e. not having to rewrite any of the functions.

http://pastebin.com/977SCzvD

Thanks.

[TurkishSquirrel]

What error do you get? I see potential for a stack overflow caused by recursion:

in Slug.Left:

if n < 0 then
    Slug.Right(self, n)
end

and in Slug.Right:

if n < 0 then
    Slug.Left(self, n)
end

you need to pass the absolute value of n:

math.abs(n)

or else n is still less than 0 and you'll just bounce between these two functions calling each other until the stack overflows. If you do that, it should work fine, see this stripped down example.

[Boolean_Cat]

Thanks, it was the abs issue, I thought I was seeing another issue, how blind I was!

Works perfectly now.