RE: deriving Bits
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. Simon | -Original Message- | From: ghc-devs [mailto:ghc-devs-boun...@haskell.org] On Behalf Of Kazu | Yamamoto | Sent: 03 September 2014 06:48 | To: ghc-devs@haskell.org | Subject: deriving Bits | | Hi, | | Recently, I found that we can put Bits in deriving. I checked the | GHC manual but it seems to me that this page does not cover Bits: | | https://www.haskell.org/ghc/docs/7.8.3/html/users_guide/deriving.h | tml | | Are there any other classes which can be automatically derived and are | not listed in this page? | | If the number of such classes is not large, how about adding them to | this page? | | --Kazu | ___ | ghc-devs mailing list | ghc-devs@haskell.org | http://www.haskell.org/mailman/listinfo/ghc-devs ___ ghc-devs mailing list ghc-devs@haskell.org http://www.haskell.org/mailman/listinfo/ghc-devs
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
RE: deriving Bits
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
Re: deriving Bits
Simon, As the GND documentation says, it works for ANY class. So we can't list them! Understand. Thanks. --Kazu ___ ghc-devs mailing list ghc-devs@haskell.org http://www.haskell.org/mailman/listinfo/ghc-devs
