[Haskell-cafe] [ANN] acme-dont-1.2 - a "don't" construct

Henk-Jan van Tuyl hjgtuyl at chello.nl
Wed Apr 1 13:07:08 UTC 2020


The `don't` function is a big step forward in computering; it will surely
prevent many bugs from occurring, with little effort to software

Is it published in a scientific magazine yet?

Henk-Jan van Tuyl

On Wed, 01 Apr 2020 10:38:08 +0200, Jack Kelly <jack at jackkelly.name> wrote:

> Hello all,
> I have taken over the maintainership of acme-dont, and am pleased to
> announce a new acme-dont release on Hackage[1].
> acme-dont provides a `don't` function, which does not execute its
> argument. For example, the following code will not print anything:
>     import Acme.Dont (don't)
>     quiet :: IO ()
>     quiet = don't $ putStrLn "You'll never see this on stdout"
> New in this release:
> * `don't` has been generalised from `Monad` to `Applicative`. If you
>   have been waiting since GHC 8.0.1's release in 2016[2] to use `don't`  
> with
>   `-XApplicativeDo`, wait no longer.
> * A test suite, to ensure that `don't` does not do anything. Previous
>   versions could have been defined as `don't = void` for all we knew.
> Also, the acme-dont community now has a new home on sourcehut. On there,
> you can find the following invaluable resources:
> * A source repository[3], to track further developement and new ways of
>   not doing things, with a commit history reconstructed from the release
>   tarballs uploaded to Hackage.
> * A mailing list[4] for the acme-dont community to discuss the best ways
>   of not doing things.
> * A bug tracker[5] to handle reports, in case someone observes acme-dont
>   doing something.
> * Continuous integration[6], to ensure that acme-dont continues to not
>   do things across multiple versions of GHC.
> I would like to thank Gracjan Polak for uploading the initial releases
> of `acme-dont`, and for maintaining the package these past eleven
> years. I do not intend to betray the responsibility he has assigned me
> in handing over this critical package.
> Best,
> -- Jack
> [1]: https://hackage.haskell.org/package/acme-dont-1.2
> [2]: https://www.haskell.org/ghc/download_ghc_8_0_1
> [3]: https://git.sr.ht/~jack/acme-dont
> [4]: https://lists.sr.ht/~jack/acme-dont-discuss
> [5]: https://todo.sr.ht/~jack/acme-dont
> [6]: https://builds.sr.ht/~jack/acme-dont
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