From: "Angela Zhu" <angela22.zhu@gmail.com>
To: caml-list@inria.fr
Subject: Ocaml type with constraints?
Date: Sun, 21 Sep 2008 17:01:21 -0500 [thread overview]
Message-ID: <f82e818a0809211501x824e457y164c71c9ebc45a1d@mail.gmail.com> (raw)
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Hi,
I want to define an OCaml type with constraints.
For example:
type item = Item of int * float;;
If here this float type is for price of some item, and I want to make sure
it is positive. In other words, if x = (xi, xf) of type item,
I want to enforce, xf must >= 0.
Is there a way to define OCaml type like this?
Thanks a lot!
Angela
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next reply other threads:[~2008-09-21 22:01 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-21 22:01 Angela Zhu [this message]
2008-09-21 22:05 ` [Caml-list] " Andrej Bauer
2008-09-21 23:10 ` Martin Jambon
2008-09-21 22:50 ` Gordon Henriksen
2008-09-21 23:55 ` Jacques Garrigue
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