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Message-ID: <550B1593.7050701@lexifi.com>
Date: Thu, 19 Mar 2015 19:29:39 +0100
From: Alain Frisch <alain.frisch@lexifi.com>
Organization: LexiFi
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To: Jeremy Yallop <yallop@gmail.com>, =?UTF-8?B?TWlsYW4gU3Rhbm9qZXZpxIc=?=
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CC: =?UTF-8?B?RGFuaWVsIELDvG56bGk=?= <daniel.buenzli@erratique.ch>, 
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Subject: Re: [Caml-list] GADT existential escape

On 03/19/2015 06:41 PM, Jeremy Yallop wrote:
> The exn type doesn't support GADT
> constructors (since it doesn't have type parameters)

Note that even if exn doesn't have type parameters, it supports the GADT 
syntax to define constructors with existentials:


exception A: 'a * ('a -> string) -> exn;;


-- Alain