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Python from Wise Guy's Viewpoint

Remi Vanicat vanicat+invalid at labri.fr
Sat Oct 25 14:48:12 EDT 2003 
gt5163b at prism.gatech.edu (Brian McNamara!) writes:

> prunesquallor at comcast.net once said:
>>Are they happy with something like this?
>>
>>(defun black-hole (x)
>>  #'black-hole)
>>
>>(for non lispers, the funny #' is a namespace operator.
>> The black-hole function gobbles an argument and returns
>> the black-hole function.)
>
> Finally, an example that I don't think you can type in Haskell.  
> You score a point for that.  :)
>
> If we have a static type system which admits infinite types, then we
> can assign black-hole a type.  So it's still typeable, just not in any
> common language I can name offhand.  :)

$ ocaml -rectypes
        Objective Caml version 3.07+2
 
# let rec f x = f;;
val f : 'b -> 'a as 'a = <fun>

By the way, I don't see how this function can be useful...

-- 
Rémi Vanicat
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