String formatting in Haskell

Question

What is Haskell\'s equivalent of

string str = string.Format(\"{0} {1}\",10,20); // C#

Answer 1

There is a Printf module in GHC.

import Text.Printf
str :: String
str = printf "%d %d" 10 20

however it is probably simpler to just do

str = show 10 ++ " " ++ show 20