SketchyLISP Reference |
Copyright (C) 2007 Nils M Holm |
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Conformance: R5RS Scheme
Purpose: Test whether a number is odd (not even).
Arguments:
X - number
Model:
(define (odd? x) (not (even? x)))
Implementation:
(define (odd? x) (and (memq (car (reverse (integer->list x))) (integer->list 13579)) #t))
Example:
(odd? 3) => #t
See also:
digits,
even?,
zero?.
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