[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Paul F. Dietz
Wed, 25 Sep 2002 07:28:33 -0500
All of these are fixed by the make-sequence patch I just uploaded,
> except the last, which I don't understand.
> (merge 'null (list 1 2 3) (list 4 5 6) #'<)
> Why should this be an error? 'null is a subtype of 'list, and as the
The standard also says:
An error of type type-error should be signaled if result-type
specifies the number of elements and the sum of the lengths
of sequence-1 and sequence-2 is different from that number.
NULL specifies the number of elements (zero).
Now, if you take 'specifies' to mean 'constrains', then
the compound CONS types should also be checked:
(merge '(cons * (cons * *)) ...) ==> error if the result
has fewer than two elements
This is getting into some seriously baroque language lawyering,
so don't put a high priority on this.
- [Gcl-devel] MERGE,
Paul F. Dietz <=