[plt-scheme] What am I doing wrong?
I'm probably doing something really dumb. When I run this program:
#lang scheme
(define (counts lst)
(let ([tbl (make-hasheq)])
(for ((item (in-list lst)))
(hash-set! tbl item (add1 (hash-ref tbl item 0))))
tbl))
(define x '(2 2 3 3 2))
(define c (counts x))
(define c> (counts (sort x >)))
(define c< (counts (sort x <)))
(for/or (((k v) (in-hash c))) (= v 2))
(for/or (((k v) (in-hash c<))) (= v 2))
(for/or (((k v) (in-hash c>))) (= v 2))
the result is
Welcome to DrScheme, version 4.0.2 [3m].
Language: Module.
#t
#t
#f
>
Why does the last loop evaluate to #f?
-mike
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