gistfile1.clj

(defn str-template
  [s & args]
  (fn [params]
    (apply format s ((apply juxt args) params))))

user=> (def t1 (str-template "My name is %s, my id is %s" :firstname :ssn))
#'user/t1
user=> (t1 {:firstname "John" :lastname "Doe" :ssn "111111" })
"My name is John, my id is 111111"