Christian Szegedy wrote:
> Can anyone tell me, why does the following piece of
> code fail to compile, and how can I achieve
> equivalent effect in the most convenient way?
> 
> class a () =
>   object(self)
>      method f : 'a. ((< f : unit; .. > as 'a) -> unit) = fun other -> 
> other#f      method g = (self :> a)
>   end
> 
> Thanks in advance!
> 

Your type annotations are not correct. Omit the ones which are not 
strictly needed.

class a =
object (self)
   method f : 'a.((<f:unit; ..> as 'a) -> unit) > as 'a) -> unit) =
     fun x -> x # f
   method g = self
end

Alex

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