[Haskell-cafe] Enum to String, and back?

[Martijn van Steenbergen]

Hi Michael,

michael rice wrote:
> Can one as easily establish a reverse relationship, i.e., convert a 
> String type like "Red" back to its corresponding Color type?
> 
> So that
> 
> "Red" :: [Char] -> Red :: Color

Yes, simply add Read to your list of to be derived type classes. Then 
you can say:

 > read "Red" :: Color

HTH,

Martijn.