Lua for loop control variable

Question

I need to be able to advance my for loop control index variable - from within the loop

for i=1,5 do
   io.write(("i: %d; "):format(i))
   i = i + 2 -- this has no effect, as 'for' is in control of the index var.
end

Answer 1

I recommend you to use 'while'.

local i = 1
while i <= 5 do
  io.write(("i: %d; "):format(i))
  i = i + 2 -- it works
end