lua-users home
lua-l archive

[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index] [Thread Index] 


On 1-Feb-06, at 3:45 PM, Doug Rogers wrote:


Chris Marrin wrote:


Wow, that seems like a lot of work. Has anyone done a library to make
any of this simpler?


Well, the meat of it is only a handful of lines of Lua. If you can live
without the flexibility of establishing your own types (a different
thread recently discussed), then it could be as simple as:

function types(args)
   local tt = {}
   table.foreachi(args, function(_,v)
                           table.insert(tt, ',' .. type(v))
                        end)
   return string.sub(table.concat(tt), 2)
end


or even (5.1):

function types(args)
  local tt = {}
  for i = 1, #args do
    tt[i] = type(args[i])
  end
  return table.concat(tt, ",")
end

(assuming that no arg is nil, of course :)