When I tried to use poe to cache some functions, I got a run-time error. When I examined poe.scm to understand what I did wrong, I found code that doesn't make sense under guile. Can anyone confirm that poe is outdated, or I have a completely wrong idea of how to use it?
guile: 1.6.4
Here's how I tried to use it:
(use-modules (ice-9 poe))
(define (some-fn a) (list 'did-something a)) ; trivial function
(define cached-fn (pure-funcq some-fn))
(some-fn 'an-arg)
(cached-fn 'an-arg) ; first time through (dies in here)
(cached-fn 'an-arg) ; second time through
In poe.scm, it seems to be using the old idiom of '() being treated as
false:
(or (and (and (not key) (not entry))
... (eq? (car key) (car entry))
Which I think is supposed to be
(or (and (and (not (pair? key)) (not (pair? entry)))
... (eq? (car key) (car entry))
I re-wrote enough of poe.scm to get some things working.
--
Alan Grover
[EMAIL PROTECTED]
+1.734.476.0969
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