Name conflicts in Haskell records

Question

Haskell doesn\'t have dot notation for record members. For each record member a compiler creates a function with the same name with a type RecType -> FieldType. This leads

Answer 1

The GHC developers developed a couple of extensions to help with this issue . Check out this ghc wiki page. Initially a single OverloadedRecordFields extension was planned, but instead two extensions were developed. The extensions are OverloadedLabels and DuplicateRecordFields. Also see that reddit discussion.

The DuplicateRecordFields extensions makes this code legal in a single module:

data Person  = MkPerson  { personId :: Int, name :: String }
data Address = MkAddress { personId :: Int, address :: String }

As of 2019, I'd say these two extensions didn't get the adoption I thought they would have (although they did get some adoption) and the status quo is probably still ongoing.