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1 2 3 4 5 6 7 8 9 10 11 12 | ; zenlisp example program
; By Nils M Holm, 1998-2007
; See the file LICENSE for conditions of use.
; Extract the tail of a list (where the first member
; of the tail has a given property) or :f.
; (some null '(a b () c d)) => '(() c d)
(define (some p x)
(cond ((null x) :f)
((p (car x)) x)
(t (some p (cdr x)))))
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