Re: varargs & table.insert()?

[Stefan Brantschen <sbr@...>]

On 3 Aug 2007, at 13:12, Ketmar Dark wrote:

> > How does one generalize that to insert a value anywhere in a varargs?
> rewrite table.insert in Lua, so it will use xxx.n, not #n. something
> like:
>
> local function NewInsert (tbl, position, value)
>   if position <= tbl.n then
>     for f = tbl.n, position, -1 do tbl[f+1] = tbl[f]; end;
>   end;
>   tbl[position] = value;
>   return tbl;
> end;

I'd simply use (t.n is the number of elements in the table):

local function new_insert(t, val, pos)
  pos = pos or t.n + 1
  table.insert(t, pos, val)
  t.n = t.n + 1
  return t
end

(with 'pos' as last argument to leave it nil if I want to insert at  
the end, as with table.insert)

Works OMM. But maybe I miss something.

Regards
-- Stefan