Re: Indexable functions
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- Subject: Re: Indexable functions
- From: Hisham <h@...>
- Date: 2012年10月20日 13:21:17 -0300
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