----- Mail original -----
> De: "Brian Goetz" <brian.go...@oracle.com>
> À: "Remi Forax" <fo...@univ-mlv.fr>, "amber-spec-experts"
> <amber-spec-experts@openjdk.java.net>
> Envoyé: Jeudi 4 Octobre 2018 00:17:47
> Objet: Re: Concise method body + type inference ?
>> I wonder if the concise method body proposal should not be extended to add
>> parameters types/return type inference in case of overriding methods.
>
> In LVTI, we drew a bright line between inference in implementations and
> inference in declarations, for a good reason. Clever observers
> commented that "but you could safely use `var` to infer the return type
> of a private method, without inviting API instability", but we declined
> on the basis that the incremental complexity of the rules (having a
> coupling between accessibility and inference) was not justified by the
> incremental expressiveness. The current rules restrict inference to
> local variables, which is nice and clean and orthogonal. I would make
> the same argument for not introducing a similar coupling here.
Here the coupling is not between accessibility and inference, it's between
overridden methods and inference, this coupling already exists, we have even
introduced the annotation @Override in Java 5 and 6 to make the coupling
stronger, to be sure that people see that an overridden method and its
implementation are strongly linked.
Rémi
