From: Arnaud Spiwack <Arnaud.Spiwack@lix.polytechnique.fr>
To: Gabriel Scherer <gabriel.scherer@gmail.com>
Cc: "Jocelyn Sérot" <Jocelyn.SEROT@ubpmes.univ-bpclermont.fr>,
"OCaML Mailing List" <caml-list@inria.fr>
Subject: Re: [Caml-list] Dependent types ?
Date: Tue, 27 Sep 2011 11:41:16 +0200 [thread overview]
Message-ID: <CAMoPVjc1FmKtrrcz7n4jCGH0e4+jPgrSB-G23pB6SM-Km829mg@mail.gmail.com> (raw)
In-Reply-To: <CAPFanBHKHWsgPLZo7GpzWj8tjY1u4DM2V7z7DiMb+b7O57eOGA@mail.gmail.com>
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> Yes, this is right. You can already experiment in ocaml, as Denis
> Berthod suggested, by adding abstract types by hand instead of having
> constants in the initial environment.
>
You can also embed the natural numbers in Ocaml's type system by declaring
the following two types:
type 'a s
type z
Granted 32 would be written z s s s s s s s s s s s s s s s s s s s s s s s
s s s s s s s s s which may or may not be considered legible. But at least
there is no absolute need for infinitely many constants.
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next prev parent reply other threads:[~2011-09-27 9:42 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-26 11:42 Jocelyn Sérot
2011-09-26 12:07 ` Thomas Braibant
2011-09-26 12:13 ` Denis Berthod
2011-09-26 12:45 ` Yaron Minsky
2011-09-26 12:56 ` Denis Berthod
2011-09-26 15:55 ` Jocelyn Sérot
2011-09-26 16:44 ` Gabriel Scherer
2011-09-26 21:09 ` Christophe Raffalli
2011-09-27 8:34 ` Jocelyn Sérot
2011-09-27 8:23 ` Jocelyn Sérot
2011-09-27 9:16 ` Gabriel Scherer
2011-09-27 9:41 ` Arnaud Spiwack [this message]
2011-09-27 12:25 ` Jocelyn Sérot
2011-09-27 14:13 ` oliver
2011-09-27 8:27 ` Jocelyn Sérot
2011-09-26 22:51 ` oliver
2011-09-27 22:12 Damien Guichard
2011-09-28 7:27 ` Denis Berthod
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