lua-users home
lua-l archive

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

Won't this do what he wants?

function TableSize(t)
   local i=0
   for k in pairs(t) do i = i + 1 end
   return i
end

Brian


steffenj wrote:


hmmm, quick and dirty solution:

local count = 0
table.foreach(table, function(i, v)
	-- don't count numerical indices:
	if type(i) == "string" then
		count = count + 1
	end
end

but it's definetely better to use a metatable and count all the string
indizes when values are assigned to table indizes

i haven't used metatables so far but the basics are to check, on assignment,
wether the index is a string and wether the value is nil (delete index) or
not (new index) and based on that, update a counter in the table

i hope someone else can give an example...

-----Ursprüngliche Nachricht-----
Von: [email protected]
[mailto:[email protected]] Im Auftrag von Jose Marin
Gesendet: Mittwoch, 31. August 2005 22:06
An: [email protected]
Betreff: Size of a non numerical indexed table

Well, I think that the subject tells my question!

If it's a numerical indexed table, I can use
table.getn, but if the table is indexed by names, how
to get it's size?

Thanks!
_______________________________________________________ Yahoo! Acesso Grátis - Internet rápida e grátis. Instale o discador agora! http://br.acesso.yahoo.com/