Re: vector->list

[Marius Vollmer]

Kevin Ryde <address@hidden> writes:

> Szavai Gyula <address@hidden> writes:
>>
>> (let ((b (make-shared-array #(1) (lambda (x) '(0)) 2)))
>
> Thanks, though I'm not sure that's supposed to work.  I suspect you're
> not meant to make parts of the old array appear in more than one place
> in the new array.  Perhaps Marius can say what the intention is.

Hmm, I've never thought about this case.  However, if I understand
things right, it is well defined and we should support it.

My understanding is that we are talking about mapping functions here
that are constant.  That's maybe a bit unusual, but covered by the
'theory' explained in the manual.

We have warnings in the manual that the increments for a dimension can
be negative and that people should be prepared for that.  We should
extend those warnings to zero increments.  (And probably review our
own code.)

-- 
GPG: D5D4E405 - 2F9B BCCC 8527 692A 04E3  331E FAF8 226A D5D4 E405