As the GND documentation says, it works for ANY class. So we can't list them! It works for classes you define and we don't know about.
Here is the documentation: http://www.haskell.org/ghc/docs/latest/html/users_guide/deriving.html#newtype-deriving Simon | -----Original Message----- | From: Kazu Yamamoto [mailto:k...@iij.ad.jp] | Sent: 03 September 2014 07:35 | To: Simon Peyton Jones | Cc: ghc-devs@haskell.org | Subject: Re: deriving Bits | | Hi Simon, | | > Can you give an example? GHC has no specific code for Bits as far | > as I know. Perhaps you are using GeneralisedNewtypeDeriving? You | > don't give enough context to say. | | Yes, I'm using GeneralisedNewtypeDeriving. So, my question should be: | | Are there any other classes which can be automatically derived if | GeneralisedNewtypeDeriving is specified and are not listed in this | page? | | --Kazu _______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://www.haskell.org/mailman/listinfo/ghc-devs
