RosettaCodeData/Task/FizzBuzz/Shen/fizzbuzz-2.shen

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(defprolog fizz
0 <-- (is _ (output "Fizz"));
N <-- (when (> N 0)) (is N1 (- N 3)) (fizz N1);
)
(defprolog buzz
0 <-- (is _ (output "Buzz"));
N <-- (when (> N 0)) (is N1 (- N 5)) (buzz N1);
)
(define none
[] -> true
[true | _] -> false
[_ | B] -> (none B)
)
(define fizzbuzz
N M -> (nl) where (> N M)
N M -> (do
(if (none [(prolog? (receive N) (fizz N)) (prolog? (receive N) (buzz N))])
(output (str N))
(output "!")
)
(nl)
(fizzbuzz (+ N 1) M)
)
)
(fizzbuzz 1 100)