Re: A value for "nothing"

[HiPhish]

Yes, this sounds like the best solution so far.

On Sonntag, 26. August 2018 23:07:26 CEST you wrote:
> The eq? predicate is able to distinguish the three.  But I think using a
> singleton record is best:
> 
> (define-record-type (<nil> nil? make-nil))
> (define nil (make-nil))
> 
> and thene export njil and nil? but not <i>ni> or make-nil.