Re: [core libraries] Adding Backwards to base, re-export from Control.Applicative

+1 Was surpised/dismayed that Backwards wasn't in base when I needed it for a project that doesn't expose its transitive dependency on transformers. It seems like fundamental part of Applicative. --Keith On November 26, 2019 8:55:05 AM UTC, Oleg Grenrus wrote:

+1 on adding.

Slight -0.5 on re-exporting from Control.Applicative. I think there should be a plan of not having both Backwards in Control.Applicative and Control.Applicative.Backwards. Maybe there's a plan for Const which is exported from Control.Applicative (historically) and Data.Functor.Const.

- Oleg

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I support this. It would require coordinating with Ross Paterson, the maintainer of transformers.

On Tue, 26 Nov 2019 at 09:58, Baldur Blöndal wrote:

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I'll CC Haskell Libraries

þri., 12. nóv. 2019 kl. 22:14 skrifaði Ryan Scott :

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This discussion definitely belongs on the mailing list, yes.

Ryan

On Tue, Nov 12, 2019 at 11:59 AM chessai . wrote:

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I support this. +1

Should we copy in the libraries mailing list?

On Tue, Nov 12, 2019, 5:56 AM Baldur Blöndal wrote:

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Is it time to move Control.Applicative.Backwards module from

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It's an interesting, important, simple property of Applicative

On 26.11.2019 2.49, George Wilson wrote: transformers to base, and maybe re-export it from Control.Applicative. that they can be run backwards.

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