From: padiolea@irisa.fr
To: "Eric Cooper" <ecc@cmu.edu>
Cc: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] ]Caml-list] Types
Date: Sun, 19 Jun 2005 20:09:04 +0200 (CEST) [thread overview]
Message-ID: <49301.62.147.45.218.1119204544.squirrel@mail.irisa.fr> (raw)
In-Reply-To: <20050619153707.GA7411@localhost>
> On Sun, Jun 19, 2005 at 06:42:01PM +1200, Jonathan Roewen wrote:
>> Is it possible to create a record type that has a member which is a
>> polymorphic type?
>>
>> I tried: type rect = { mutable x1: 'a; ... } but that doesn't work.
>> Also, type a = A of 'a doesn't seem to work either.
>
> type t = { f : 'a . 'a -> 'a list }
>
> let x = { f = fun x -> [x] }
>
> let y = { f = fun x -> [x;x] }
why not simply
type 'a rect = { mutable x1 = 'a; .... }
>
> --
> Eric Cooper e c c @ c m u . e d u
>
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prev parent reply other threads:[~2005-06-19 18:09 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-19 6:42 Jonathan Roewen
2005-06-19 7:09 ` [Caml-list] " Michael Wohlwend
2005-06-19 15:37 ` Eric Cooper
2005-06-19 18:09 ` padiolea [this message]
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