/usr/lib/s9fes/union.scm is in scheme9 2010.11.13-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 | ; Scheme 9 from Empty Space, Function Library
; By Nils M Holm, 2009
; See the LICENSE file of the S9fES package for terms of use
;
; (union list ...) ==> list
;
; Compute the union of a series of sets.
;
; Example: (union '(v w x) '(w x y) '(x y z)) ==> (v w x y z)
(load-from-library "list-to-set.scm")
(define (union . a*)
(list->set (apply append a*)))
|