string formatting

[IIYAMA]

local theString = tostring(2) 
if string.len(theString) == 1 then 
 theString = 0 .. theString 
end  
  
print(theString) 

Does anybody knows how to do this shorter?

So if there is one character, it will have a zero at front.

  
So: 
01 
02 
03 
04 
05 
06 
07 
08 
09 
10-- 2 characters. 
11 
12 
etc. 

[cheez3d]

local String = ("%02d"):format(4); 

[IIYAMA]

Thank you very much, I am not very good with string formats.

[cheez3d]

You can find out more about them here:

http://www.cplusplus.com/reference/cstdio/printf/

[IIYAMA]

ah, thank you very much again.