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[Caml-list] [Q]: Co(ntra)variance and subtyping?
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| Date: | -- (:) |
| From: | Alain Frisch <frisch@c...> |
| Subject: | Re: [Caml-list] [Q]: Co(ntra)variance and subtyping? |
On Mon, 19 Nov 2001, Jacques Garrigue wrote: > In the ML world, we mean complete type inference. What does complete type inference mean ? I would say that it implies that no type annotation is mandatory (if a program typechecks with a type annotation, it should also typecheck without). This property does not hold in OCaml; you can't remove type annotation in: class o = object method f (x : int) = x end or in the toplevel structure: let f () : [`A] = `A let x = f () -- Alain ------------------- Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr