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From: David Brown <caml-list@davidb.org>
To: Caml List <caml-list@inria.fr>
Subject: [Caml-list] Recursive types and functors.
Date: Tue, 25 Mar 2003 22:28:54 -0800	[thread overview]
Message-ID: <20030326062854.GA15098@opus.davidb.org> (raw)

I have a recursive type where I'd like one of the constructors of the
type to contain a set of the type (or something like set).  However, I
can't figure out how to represent this.

For example:

type foo =
  | Integer of int
  | String of string
  | Set of FooSet

module FooSet = Set.Make (struct type t = foo let compare = compare end)

but this obviously doesn't work.

I suspect putting type foo in a functor can somehow make it work, but I
haven't quite figure out how to do it.

Thanks,
Dave Brown

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             reply	other threads:[~2003-03-26  6:28 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-03-26  6:28 David Brown [this message]
2003-03-26  8:25 ` Jean-Christophe Filliatre
2003-03-26  8:57   ` David Brown
2003-03-26 15:59     ` brogoff
2003-03-26  9:13   ` Claude Marche

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