Re: Scope Question

dstein64 wrote:
Suppose I have a recursive function that is searching for elements in
a tree. How can I store a list such that it is not reset on each
recursive call to the search function?

In general, how can I initialize a variable within a function that
will not be reset on each recursive call to that function? I hope my
question is clear. If not, please let me know. Thanks.
This counter function should give you an idea:
(let ((count 0))
(defun counter ()
(incf count)))

(that is, make it a closure)
If your recursive function was in a LABELS, you would bind your
variable outside of the LABELS form. Implementing the function with a
locally defined function would probably be best because it means you
might need to do less setup/cleanup.
.

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