Dont Pickup Cobble And Dirt

I dont want my mining turtles to pickup dirt or cobble. Is there a way to do this?

I thought about the compare function, but in that case it needs a stack of dirt and a stack of cobble in an inventory slot ?
And are there ways to do it without compare with an item on the turtle ?

No way of doing it without comparsion, but you dont need a stack of cobble and dirt, you only need one of both. Check if you have more than one of any of them on a secondly basis, and drop (count - 1) of them, so one block always stays in one slot of the turtle.

got a snipit of that so i dont have to invent that wheel again ? :P/>

At the top of the code:

local function dropCrap(slot)
    local count = turtle.getItemCount(slot)
    if count < 2 then return end
    turtle.select(slot)
    turtle.drop(count - 1)
end

In the loop (you sure have a loop somewhere):

-- ... whatever code you have before this in the loop

dropCrap(1)
dropCrap(2)

-- ... whatever code you have after this in the loop

i tried this (doesn seem to work yet)
slot 2 and 3 are cobble and dirt. slot 1 is an enderchest and 16 is fuel

local function CobbleDirt()
for i=1, 16 do
  turtle.select(i)
  if turtle.compare(2) then
   if i ~= FuelSlot and i ~= EnderchestSlot and i ~= ignoreCobbleSlot and i ~= ignoreDirtSlot then
    turtle.drop()
   end
  end
  if turtle.compare(3) then
   if i ~= FuelSlot and i ~= EnderchestSlot and i ~= ignoreCobbleSlot and i ~= ignoreDirtSlot then
    turtle.drop()
   end
  end
end
end

Heck, why did I tell you that you have to use comparsion?! I guess that was my previous idea. Okay, no need of comparsion. Just use dropCrap in the loop.

oh got it working now :D/> i used compare instead of compareTo ..

local function CobbleDirt()
for i=1, 16 do
  turtle.select(i)
  --turtle.compareTo(number slot)
  if turtle.compareTo(2) then
   if i ~= FuelSlot and i ~= EnderchestSlot and i ~= ignoreCobbleSlot and i ~= ignoreDirtSlot then
    turtle.drop()
   end
  end
  if turtle.compareTo(3) then
   if i ~= FuelSlot and i ~= EnderchestSlot and i ~= ignoreCobbleSlot and i ~= ignoreDirtSlot then
    turtle.drop()
   end
  end
end
end

For the record, you could compress those two if statements into one using or, since they both do the same thing.

local function CobbleDirt()
for i=1, 16 do
  turtle.select(i)
  --turtle.compareTo(number slot)
  if turtle.compareTo(2) or turtle.compareTo(3) then
   if i ~= FuelSlot and i ~= EnderchestSlot and i ~= ignoreCobbleSlot and i ~= ignoreDirtSlot then
    turtle.drop()
   end
  end
end
end