ns-publics

;; create the namespace and switch to it
user=> (in-ns 'demo.ns)
#<Namespace demo.ns>

;; Make sure all of the good stuff in clojure.core is usable here, too.
demo.ns=> (clojure.core/use 'clojure.core)
nil

;; define some public functions
demo.ns=> (defn public-fn1 [x y] (+ x y))
#'demo.ns/public-fn1
demo.ns=> (defn public-fn2 [t] (* t t t))
#'demo.ns/public-fn2

;; define a private function with defn-
demo.ns=> (defn- private-fn [s] (/ s 5))
#'demo.ns/private-fn

;; Switch back to the user namespace
demo.ns=> (in-ns 'user)
#<Namespace user>

;; Get a map of all intern mappings for namespace demo.ns
user=> (ns-interns 'demo.ns)
{public-fn1 #'demo.ns/public-fn1, private-fn #'demo.ns/private-fn, public-fn2 #'demo.ns/public-fn2}

;; Now get a map of only the public mappings.  No private-fn here.
user=> (ns-publics 'demo.ns)
{public-fn1 #'demo.ns/public-fn1, public-fn2 #'demo.ns/public-fn2}

;; See also https://clojure.org/namespaces for information on namespaces in Clojure and how to inspect and manipulate them