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type abbreviation is cyclic
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Date: -- (:)
From: Dmitri Boulytchev <db@t...>
Subject: Re: [Caml-list] type abbreviation is cyclic
    Atleast one value of that type exists :)

    let rec x y n = (n (y+1) x) + 1
  

>Type b doesn't exactly make much sens to me.
>While I could easilly define a value of type b (fun x:int _ -> x ) I
>really don't see the point. I'm gessing you'r trying to pass a chain
>of alternative functions (In which case this seems to be the  wrong
>way).
>Could you give an exemple (without using Obj.magic) were you'd
>actually need such a type.
>On 10/24/07, William W Smith <sesquized@sbcglobal.net> wrote:
>  
>
>>I wonder whether this error is an example of the language being defined more
>>restrictively than required.  What is the reason that I get these results?
>>
>>type a  = int -> one -> int and one = Unused | One of a;;
>>type b = int -> b -> int
>>
>>type a is accepted while type b is not. (b gives "The type abbreviation b is
>>cyclic"  However, in the uses that I intended, there won't be any actual
>>difference between the two.
>>
>>I'd appreciate an explanation about why there is difference  between a and
>>b.
>>
>>Thanks
>>
>>Bill Smith
>>
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>>
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