clojure.core/eval

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Type: function Added: Clojure 1.0 Examples: 3 Runnable: 1

([form])

Evaluates the form data structure (not text!) and returns the result.

Examples

by dakrone on 2010-07-31 . May have evaluation errors. ▶

(def *foo* "(println [1 2 3])") #'user/*foo* *foo* "(println [1 2 3])" (eval *foo*) ; Notice eval'ing a string does not work. "(println [1 2 3])" (eval (read-string *foo*)) [1 2 3] nil

by steveminer on 2011-06-25 ▶

(eval '(let [a 10] (+ 3 4 a))) 17

by APOS80 on 2016-03-15 . May have evaluation errors. ▶

(def x '(+ 2 3)) (println x) => (+ 2 3) (println (eval x)) => 5

Note by steveminer

In normal code, eval is rarely used.

Note by eengebruiker

Once you get used to eval you will use it more often. You can make nifty things with it.

See also

• clojure.core/read-string (4)

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