(do
(: assert (fn [x e] (if x x (do (print e) (exit 1)))))
(assert (= 10 (+ 1 2 3 4)) "addition")
(assert (= -8 (- 1 2 3 4)) "subtraction")
(assert (= 24 (* 1 2 3 4)) "multiplication")
(assert (= 0.1 (/ 1.0 10)) "division")
(exit 0)
)