Substitution Examples

;              for      in
>(subst 'axolotl 'banana '(banana pudding))
(axolotl pudding)

>(subst 10 'r '(* pi (* r r)))
(* pi (* 10 10))

>(def pi 3.1415926535897933)

>(eval (subst 10 'r '(* pi (* r r))))
314.1592653589793