Re: Little fun with vararg

[Eduardo Ochs <eduardoochs@...>]

The outer parentheses in

  return (table.unpack(tk) )

truncate the results of table.unpack(tk) to a single result.

On Sun, Aug 3, 2014 at 2:22 PM, jseb <gmane2013@finiderire.com> wrote:
> Hello, it's probably a dumb question, but when i try to print the
> returned table.unpack, i get only the first key.
>
> I know that «table.unpack» will do: return list[i], list[i+1], ···,
> list[j].
>
> So i should get the values by doing :
> local a,b,c,… = get_keys(t)
>
> But all variables after a are nil.
>
> function get_keys(t)
>   local key=nil
>   local tk={}
>   repeat
>     key = next(t,key)
>     if tk~=nil then tk[#tk+1]=key end
>   until key==nil
>
>   print(table.unpack(tk))
>   return (table.unpack(tk) )
> end
>
> local t={nom="marcel",age=42,sexe="oui"}
> print (get_keys(t))
>
>
> $ ./get_keys.lua
> nom     age     sexe
> nom     nil     nil
>
>
> Thank you.
>
>
>