From: Steffen Smolka <smolka@cs.cornell.edu>
To: Leo White <leo@lpw25.net>, Caml List <caml-list@inria.fr>
Subject: Re: [Caml-list] extend object type?
Date: Fri, 10 Feb 2017 11:43:54 -0500 [thread overview]
Message-ID: <CAGh2ivAY_QO7PAqi-HtFNHKOYO_CLsAk-N38fAsjkRjaj52AUA@mail.gmail.com> (raw)
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Thanks, this will do! The #t1 syntax is something else I was looking for.
-- Steffen
> You can't do it for object types directly, but you can do it for class
> types:
> class type t1 = object method f : int end
> class type t2 = object inherit t1 method g : bool end
> Defining a class type also defines the corresponding object type, which
> means the above results in types called t1 and t2 that are equal to the
> ones you want.
> This trick also lets you use #t2 to refer to the polymorphic type < f :
> int; g : bool; .. >.
> Regards,
> Leo
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next reply other threads:[~2017-02-10 16:44 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-10 16:43 Steffen Smolka [this message]
-- strict thread matches above, loose matches on Subject: below --
2017-02-10 14:49 Hongbo Zhang (BLOOMBERG/ 731 LEX)
2017-02-10 4:15 Steffen Smolka
2017-02-10 8:30 ` Kakadu
2017-02-10 9:42 ` Leo White
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