Re: [Scheme-reports] Technical question Emmanuel Medernach (26 May 2011 16:38 UTC)
Re: [Scheme-reports] Technical question Eli Barzilay (26 May 2011 16:48 UTC)
Re: [Scheme-reports] Technical question Andre van Tonder (26 May 2011 17:38 UTC)
Re: Technical question Arthur A. Gleckler (26 May 2011 16:49 UTC)

Re: [Scheme-reports] Technical question Andre van Tonder 26 May 2011 17:38 UTC

On Thu, 26 May 2011, Eli Barzilay wrote:

> 10 minutes ago, Emmanuel Medernach wrote:
>> On Thu, May 26, 2011 at 6:07 PM, Andre van Tonder <andre@het.brown.edu>wrote:
>>
>>> On Thu, 26 May 2011, Eli Barzilay wrote:
>>>
>>>> This is a question for WG1 (collectively):
>>>>
>>>> According to R5RS, is this code:
>>>>
>>>>  (call-with-values
>>>>    (lambda ()
>>>>      (call-with-current-continuation (lambda (k) (k 1 2 3))))
>>>>    (lambda (x y z) 'ok))
>>>>
>>>> allowed to throw an error, or to return anything other than 'ok ?
>>>
>>> It is /not/ allowed to throw an error in R5RS.  According to R5RS:
>>>
>>>    Values might be defined as follows: [...]
>
> It seems that some people take that "might" as open permission to
> ignore that implementation.

That would be in violation of the R5RS, because the formal semantics
of R5RS in 7.2.4 require VALUES to have the semantics that would
return OK in your example.

_______________________________________________
Scheme-reports mailing list
Scheme-reports@scheme-reports.org
http://lists.scheme-reports.org/cgi-bin/mailman/listinfo/scheme-reports