You could write it:
(defn say-hello
([names] (say-hello names #{}))
([[name & names] saluted]
(if name
(do (if (saluted name)
(println "Welcome back" name)
(println "Hello" name))
(recur names (conj saluted name)))
(println "Goodbye"))))
- James
On 2 October 2014 00:06, Nicolás F. <[email protected]> wrote:
> I'm a clojure noob and im playing around with the language; made this fn
> to have a taste of a couple of features. I think it's pretty concise but
> i'm probably doing something "not the clojure way", So if you can teach me
> a couple of things please go ahead ;D
>
> (defn say_hello
> ([names] (say_hello names []))
> ([names saluted]
> (if (some #{(first names)} saluted)
> (println "Welcome Back" (first names) "!")
> (println "Hello" (first names) "!"))
> (if (empty? (rest names))
> (println "Goodbye")
> (say_hello (rest names) (cons (first names) saluted)))))
>
> (say_hello ["Peter" "Pablo" "John" "Peter"])
>
> ; Hello Peter !
> ; Hello Pablo !
> ; Hello John !
> ; Welcome Back Peter !
> ; Goodbye
> ; nil
>
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