record-hasfield: A version of GHC.Records as available in future GHCs.
This package provides a version of GHC.Records as it will be after the implementation of GHC proposal #42, plus some helper functions over it.
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- record-hasfield-1.0.1.tar.gz [browse] (Cabal source package)
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| Versions [RSS] | 1.0, 1.0.1 |
|---|---|
| Change log | CHANGES.txt |
| Dependencies | base (>=4.4 && <5) [details] |
| Tested with | ghc ==9.8, ghc ==9.6, ghc ==9.4, ghc ==9.2, ghc ==9.0, ghc ==8.10, ghc ==8.8 |
| License | BSD-3-Clause |
| Copyright | Adam Gundry and Neil Mitchell 2018-2024 |
| Author | Neil Mitchell <ndmitchell@gmail.com> |
| Maintainer | Neil Mitchell <ndmitchell@gmail.com> |
| Category | Development |
| Home page | https://github.com/ndmitchell/record-hasfield#readme |
| Bug tracker | https://github.com/ndmitchell/record-hasfield/issues |
| Source repo | head: git clone https://github.com/ndmitchell/record-hasfield.git |
| Uploaded | by NeilMitchell at 2024-01-21T09:32:37Z |
| Distributions | LTSHaskell:1.0.1, NixOS:1.0.1, Stackage:1.0.1 |
| Reverse Dependencies | 7 direct, 5 indirect [details] |
| Downloads | 4182 total (7 in the last 30 days) |
| Rating | (no votes yet) [estimated by Bayesian average] |
| Your Rating | |
| Status | Docs available [build log] Last success reported on 2024-01-21 [all 1 reports] |
Readme for record-hasfield-1.0.1
[back to package description]record-hasfield 
This package provides a version of "GHC.Records" as it will be after the implementation of GHC proposal #42, which reads:
-- | Constraint representing the fact that the field @x@ can be get and set on
-- the record type @r@ and has field type @a@.
class HasField x r a | x r -> a where
-- | Function to get and set a field in a record.
hasField :: r -> (a -> r, a)
In GHC these will be magically solved, but this package doesn't provide that. This package does provide extra helper functions for working with the HasField type class.