Turtle Dig If Has Space Program

while true do
    if not turtle.detect() then
        goto continue
    end

    hasSpace = false
    for slot=1,16 do
        if turtle.getItemCount(slot) == 0 then
            hasSpace = true
            break
        end
    end

    if hasSpace then
        turtle.dig()
        sleep(0.1)
        turtle.suck()
    end

    ::continue::
    sleep(0.1)
end