From: "David Allsopp" <dra-news@metastack.com>
To: "OCaml List" <caml-list@inria.fr>
Subject: [Caml-list] Constraining mutability of record types with interfaces
Date: Thu, 20 Feb 2014 18:52:20 -0000 [thread overview]
Message-ID: <002201cf2e6c$e2696f60$a73c4e20$@metastack.com> (raw)
Is there a profound reason that I'm missing (possibly to do with
optimisations) why one can't have:
Foo.mli
type foo = {bar : unit}
Foo.ml
type foo = {mutable bar : unit}
i.e. have field mutability being something which can be constrained by an
interface in a sort of equivalent way to private types? I'm guessing, as the
compiler goes to the trouble of explaining the exact error, that there is!
David
next reply other threads:[~2014-02-20 18:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-20 18:52 David Allsopp [this message]
2014-02-20 19:30 ` Gabriel Scherer
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