Re: [Haskell-cafe] Data.Time.Calendar.Day does not seem to have an instance for Read

So then it's not a bug. The instance is defined in Data.Time.Format.Parse, and Data.Time.Calendar doesn't import that module.

This, however is a bug, I think:

Prelude> import Data.Time Prelude Data.Time> read "2011-10-10" :: Day

... no instance for (Read Day) ...

Prelude> :m +Data.Time Prelude Data.Time> read "2011-10-10" :: Day 2011-10-10

Erik

Thanks Erik.