meta data example

[wactbprot]

(defn b {:dat {:id "rr"}} [x] x)
(meta #'b)
;;=> {:arglists ([x]), 
;;:dat {:id "rr"}, 
;; :line 1, 
;; :column 1,
;; :file "/tmp/form-init622948645991809569.clj",
;; :name ;; b,
;; :ns #object[clojure.lang.Namespace 0x673b667d "user"]}   
((meta #'b) :dat)
;;=> {:id "rr"}