Re: Indexable functions

[Hisham <h@...>]

On Sat, Oct 20, 2012 at 12:43 AM, Rena <hyperhacker@gmail.com> wrote:
> The problem that occurs to me is that print() does a bit of magic to
> align things nicely to columns (it looks more complex than just
> appending a tab to everything?) and I'm not sure how that works.

No, it really just runs tostring on all arguments, and then concats
them with tab and adds a line break. This is all there is to it.
Here's print reimplemented in Lua:

function print(...)
   for i = 1, select("#", ...) do
      if i > 1 then
         io.stdout:write("\t")
      end
      io.stdout:write(tostring(select(i, ...)))
      end
   io.stdout:write("\n")
end

(Note that it has to be done with select() in order to handle nils in
arguments correctly.)

-- Hisham