How to create a "replace-second" function in Clojure?

Question

(clojure.string/replace-first "a x x c d" #"x" "b" )) ; Replace first

what if I want to replace the second x in the above string?

Answer 1

Hmm maybe you can compromise?

(-> "a x x c d"  
  (clojure.string/replace-first #"x" "_")
  (clojure.string/replace-first #"x" "b" )
  (clojure.string/replace-first #"_" "x"))

Just make sure _ can't be in the string.

:)