Re: Little fun with vararg

[jseb <gmane2013@...>]

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.