Boolean Operations


  • Negation


    		•  (not item)
  • Conjunction


    		•  (and item1 item2)
  • Disjunction


    		•  (or item1 item2)


    Examples

      (not (< 0 1.5))

    		 nil

      (not (= 2.5 3.5))

    		 T

      (and (< 2 3 5) (/= 0 1))

      (and (< 3 2 4) (< 1 1.9))

      (or (> 2 3 4) (/= 3.5 6.5))

      (or (> 2 3 4) (= "ab" "AB"))

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