Question

I do the following :

(defn ss [] "kjhhj")
(doc ss)

but get “nil” returned. Why is this?

Update:

If I do :

(defn tt "kjhhj" [] 1)
(str (doc tt) )

as shown I get back an empty string… Does the “doc” output go to out or something?

Answer 1

The docstring comes before the arguments to the function. You have defined a function with no docstring that returns a string.

user> (defn ss [] "kjhhj")
#'user/ss
user> (ss)
"kjhhj"
user> (doc ss)
-------------------------
user/ss
([])
  nil
nil

user> (defn tt "kjhhj" [])
#'user/tt
user> (tt)
nil
user> (doc tt)
-------------------------
user/tt
([])
  kjhhj
nil
user>