(eval form)
Evaluates the form data structure (not text!) and returns the result.
user=> (def *foo* "(println [1 2 3])")
#'user/*foo*
user=> *foo*
"(println [1 2 3])"
user=> (eval *foo*) ; Notice eval'ing a string does not work.
"(println [1 2 3])"
user=> (eval (read-string *foo*))
[1 2 3]
nil
user=> (eval '(let [a 10] (+ 3 4 a)))
17
(def x '(+ 2 3))
(println x)
=> (+ 2 3)
(println (eval x))
=> 5