The thread and all replies were in 2018. Six years later, in 2024, Anyone
opening the up-to-date online manual still sees the old bad code there! The
manual is not adjusted even though previous emails had pointed the cause and
solution out!
Today, the page has a valid link of
https://www.gnu.org/software/guile/manual/html_node/Alist-Example.html and still
contains
6.6.20.6 Alist Example
Here is a longer example of how alists may be used in practice.
(define capitals '(("New York" . "Albany") ("Oregon" .
"Salem") ("Florida" . "Miami"))) ;; What's the capital of
Oregon? (assoc "Oregon" capitals) ?6?0 ("Oregon" . "Salem") (assoc-ref
capitals "Oregon") ?6?0 "Salem" ;; We left out South Dakota. (set! capitals
(assoc-set! capitals "South Dakota" "Pierre")) capitals ?6?0 (("South
Dakota" . "Pierre") ("New York" . "Albany") ("Oregon" . "Salem")
("Florida" . "Miami")) ;; And we got Florida wrong. (set! capitals
(assoc-set! capitals "Florida" "Tallahassee")) capitals ?6?0 (("South Dakota" .
"Pierre") ("New York" . "Albany") ("Oregon" . "Salem") ("Florida" .
"Tallahassee")) ;; After Oregon secedes, we can remove it. (set! capitals
(assoc-remove! capitals "Oregon")) capitals ?6?0 (("South Dakota" . "Pierre")
("New York" . "Albany") ("Florida" . "Tallahassee"))
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