briqueabraque: > Hi, > > I would like to get a string for a number > using always 2 digits (i.e., 75 would be > "75", 3 would became "03"). What is the > best way to do that? I tried > > printf "%02d\n" 3 > > which gives me the correct string, but > ghci always ends that call with a > > *** Exception: Prelude.undefined > > message. What else should I try? Can > Text.PrettyPrint do that? >
It's to do with ghci's defaulting. This is fixed in ghc 6.8: Prelude Text.Printf> printf "%02d\n" 3 03 You can work around it for now with: Prelude Text.Printf> printf "%02d\n" 3 >> return () 03 -- Don _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe