Printing the binary value of a number in clojure

Question

We can represent the number 12 as 2r001100 in clojure.

Is there a built-in function to print 2r001100 when given the number 12?

Answer 1

see cl-format

user=> (require '[clojure.pprint :refer (cl-format)])
nil
user=> (cl-format nil "2r~6,'0',B" 12)
"2r001100"