A version of GHC.Records as available in future GHCs. https://github.com/ndmitchell/record-hasfield#readme
|Stackage Nightly 2019-06-19:||1.0|
|Latest on Hackage:||1.0|
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.
1.0, released 2019-03-21