[r6rs-discuss] Multiple returns from higher-order procedures

[AndrevanTonder]

On Sat, 16 Jun 2007, Michael Sperber wrote:

>> The following will often return lists
>>
>>   FOLD-LEFT, FOLD-RIGHT
>>
>> but even in the case where they do not generate lists, the above requirement
>> will still make sense (it just refers to "return value of earlier returns").
>
> Could you explain?  It seems clear from the description that `fold-left'
> doesn't mutate the intermediate values, simply by the absence of
> anything saying that it does mutate.  (This is different from those that
> generate intermediate data structures themselves.)

You are right, of course.  Sorry.

Cheers
Andre