On Tue, 16 Apr 2002, Scott Cyphers wrote:
> > Sure. There was a great demo of this on the translator's list for the
> > O'Reilly book; create a representation of stacks based on arrays with a
> > top of stack index. Popping items off of the stack by moving the TOS
> > pointer around won't free them. Could you be doing something like that?
> 
> In that particular case, the stack implementation is a lot uglier when you
> need to provide the ability to neutralize array elements of arbitrary type
> as you pop the stack.  Sometimes you get lulled into thinking the GC works
> completely invisibly.

In case you ever need such functionality (stacks based on arrays), you
might want to try the library of resizable arrays called RES, which also
handles resizable strings:

  http://www.ai.univie.ac.at/~markus/home/ocaml_sources.html

It plays some naughty low-level tricks to free memory of unreachable
values, which occur when some resizable array shrinks.

Regards,
Markus Mottl

-- 
Markus Mottl                                             markus@oefai.at
Austrian Research Institute
for Artificial Intelligence                  http://www.oefai.at/~markus
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