From: Bastian Erdnuess on
Scott Hemphill <hemphill(a)> wrote:

> > How does DOSUBS work? All functions of this kind (MAP,
> > STREAM, DOSUBS) somehow don't do what I would expect at all.
> n << proc >> DOSUBS
> removes the list from the stack, and then one at a time, pushes the
> contents of each sublist of length "n" onto the stack and executes
> << proc >>. It then encapsulates all the results into a list.

OK, so DOSUBS/DOLIST let the partially results on the stack while
running and just collect everything at the end. Now, I think I also get
a clue about what STREAM does. But MAP seems to run pretty different.
It seems that it gets executed in a seperate stack environment.