Re: What's the rationale behind "for i=a,b[,c]"?

[Choonster TheMage <choonster.2010@...>]

On 17 March 2015 at 21:45, Soni L. <fakedme@gmail.com> wrote:
>
> local a,b,c = 1,10,nil
> for i=a,b,c do print(i) end -- doesn't work because of the explicit nil :/
> why's nil not a valid "no value" here? :/
>
> So there's no easy way to do it, other than:
>
> local a,b,c = 1,10,nil
> if c == nil then
>   for i=a,b do
>     <mycode>
>   end
> else
>   for i=a,b,c do
>     <mycode> -- we have to duplicate the code?!
>   end
> end
>
> Which's bad due to duplicated code
>
>
> --
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>
>

What about this?

local a,b,c = 1,10,nil
for i = a, b, c or 1 do
    <mycode>
end