I intuited that that's what the problem was. Thanks, Michael --- On Sat, 5/2/09, Rahul Kapoor wrote: From: Rahul Kapoor Subject: Re: [Haskell-cafe] Generating random enums To: "michael rice" Cc: "John Van Enk" , haskell-cafe@haskell.org Date: Saturday, May 2, 2009, 2:00 PM

OK, I think what you're saying is to work with (random) integers and use fromEnum and toEnum to get corresponding DayOfWeek. But I get this when I try to use toEnum:

*Main> toEnum 2

ghci does not know what type of enum you want to create from the number 2. Try: toEnum 2 :: DayOfWeek That said, I would expect "toEnum 2" to give an error like: 'Ambiguous type variable `a'....'. So I am not sure why your error message says: '** Exception: Prelude.Enum.().toEnum: bad argument'