TFS 1.X+ get table size?! for put , and . in message

[roriscrave]

How can i get this table size?
I need to put "," after names, but in last i need to put "."
Need print(text) -> text = You need to kill: rat, rotworm, dragon.

local configs = {
["rat"] = {
{5, 100},
},

["rotworm"] = {
{5, 150},
},

["dragon"] = {
{75, 150},
},
}
function onUse(player, item, fromPosition, target, toPosition, isHotkey)
        text = "You need to kill:"
  
        for name, tabela in pairs(configs) do
            text = ""..text.." ".. name ..","
            -- how i can get the size of table config?
            --if i use print (#config) it print 0
            --how can i put "." after last name?
        end
            --print(text)
    return true
end

 

[kubernik]

#config["rat"] print you size of rat.

 

[roriscrave]

#config["rat"] print you size of rat.

need something like it:
print(#config), and get 3.
because have rat, rotworm and dragon inside a table. I need it to put "," and "." in text message

 

[Roddet]

You can use this function

function table.length(t)
    local len = 0
    for _ in pairs(t) do
        len = len + 1
    end
    return len
end

if i use print (#config) it print 0

Operator # wasnt working because doesnt work with tables that arent arrays

For example, if u have a table like this:

local t = {1, 2, ["rat"] = {5, 100}, 4}

And you use #configs, it will print 3 because only 1, 2 and 4 are part of the array.