On Mon, 2004-12-13 at 20:58, Damien Pous wrote:
> You can do something this:
> 
> type 'a exp_ = [`Num of 'a |`Neg of 'a] 
> 
> class type obj = object 
>   method eql : obj exp_ ->  bool
> end
> 
> type exp = obj exp_

Or the converse (parameterise the class instead).

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