Silly question: when will stand alone kind sigs speed up type checking phase of compilation?
Cause that would be an interesting argument in favor :) On Fri, May 21, 2021 at 2:11 AM Baldur Blöndal <baldur...@gmail.com> wrote: > > encouraging the use of a standalone signature for type declarations > where at least one parameter of the datatype does not have kind Type. > > So Dict, Eq both get a sig but Fix and Either do not? > > type Dict :: Constraint -> Type > type Eq :: Type -> Constraint > type Fix :: (Type -> Type) -> Type > > It's sensible to exclude tired tropes like `Type` and `Type -> Type` > but higher-order functors (like Fix) warrant a signature. > > Caveat: The kind of type synonyms, type families and data families is > not necessarily determined by counting the syntactic arguments of X > like for a `data' declaration as Y could be a type, a functor, a > bifunctor.. > > type X = Y > _______________________________________________ > ghc-devs mailing list > ghc-devs@haskell.org > http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs >
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