;; metadata.clj

(def ^:boo some-var-with-meta 7)
;; => #'user/some-var-with-meta

(def some-var 7)
;; => #'user/some-var

(= some-var some-var-with-meta)
;; => true

(meta #'some-var-with-meta)
;; => {:boo true, :line 1, :column 1, :file "/Users/mindaslab/author/clojure/code/meta_data.clj", :name some-var-with-meta, :ns #object[clojure.lang.Namespace 0xf7f1972 "user"]}

(def ^{:a 1 :b 2 :c 3} lots-of-meta 42)
;; => #'user/lots-of-meta

(meta #'lots-of-meta)
;; => {:a 1, :b 2, :c 3, :line 13, :column 1, :file "/Users/mindaslab/author/clojure/code/meta_data.clj", :name lots-of-meta, :ns #object[clojure.lang.Namespace 0xf7f1972 "user"]}

(def my-list (with-meta '(1 2 3) {:secret "meta"}))
;; => #'user/my-list

my-list
;; => (1 2 3)

(meta my-list)
;; => {:secret "meta"}


(defn ^:something my-function []
  "some function")
;; => #'user/my-function


(my-function)
;; => "some function"

(meta #'my-function)
;; => {:something true, :arglists ([]), :line 29, :column 1, :file "/Users/mindaslab/author/clojure/code/meta_data.clj", :name my-function, :ns #object[clojure.lang.Namespace 0xf7f1972 "user"]}

(defn function-with-doc
  "This is a function with doc string"

  []
  (println "some function"))
;; => #'user/function-with-doc


(:doc (meta #'function-with-doc))
;; => "This is a function with doc string"


(defn ^{:a 1 :b 2 :c 3} lots-of-meta-my-function []
  "some function")
;; => #'user/los-of-meta-my-function

(meta #'lots-of-meta-my-function)
;; => {:ns #object[clojure.lang.Namespace 0xf7f1972 "user"], :name los-of-meta-my-function, :file "/Users/mindaslab/author/clojure/code/meta_data.clj", :column 1, :c 3, :line 52, :b 2, :arglists ([]), :a 1}