gistfile1.clj

user> (repl/show kf)
===  public abstract interface kf  ===
[ 0] a : void (String)
[ 1] a : void (int)
[ 2] b : void (String)
nil
user> (reify kf
        (^void a [_ ^String s] (println "a (string):" s))
        (^void a [_ ^int i] (println "a (int):" i))
        (^void b [_ ^String s] (println "b:" s)))
#<user$eval2691$reify__2692 user$eval2691$reify__2692@2013b9fb>
user> (.a *1 "foo")
a (string): foo
nil
user> (.a *2 35)
a (int): 35
nil