Is there a way to check if a string contains letters/numbers?

Hi NiKxzsu,

Yes, in-fact, it's very easy. All you need to do is use the :match() function of a string and use a string pattern with it. I'll just show you how to do it to make things easier.

local var = "8rk3pd"      -- The string.  
print(var:match("%a+"))      -- Prints 'rk' because that's the first combination of letters. %a is the string pattern for letters, and the '+' sign indicates that I want a sequence of them if possible. So, it returns rk rather than just r.

###Anyways, that's one way to do it. But, if you're interested in printing all of the letters from a string, you would loop through them using a for each iteration. Like:

local var = "8rk3pd" -- The string.

for i in string.gmatch(var, "%a+") do -- Will take the string and go through it to find sequences of letters. If you want to print each letter individually rather than sequences, you just need to remove the '+' sign.
	print(i) -- Prints the letter that it's iterating through.
end -- end for for each iteration.

###If you want to change any of the above code to do just numbers, then you can simply change the string patterns, which can be found here.

##Well, I hope I helped and have a nice day/night.

Thanks,

Best regards,

~~ KingLoneCat