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[Caml-list] Polymorphic Variants and Objects
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Date: 2001-12-18 (14:38)
From: Jim Farrand <jim@f...>
Subject: [Caml-list] Polymorphic Variants and Objects

Take a look at the following OCaml class type definition:

class type foo =
    method bar: [ `A | `B ] 

I want to be able to relax the type of bar so that it can return any variant 
tag, rather than being limited to `A or `B.

Is this possible?  I tried

class type foo =
    method bar: [> ] 

but this is rejected on the grounds that

The method bar has type [> ] where .. is unbound

Any suggestions?

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