Question

After playing a while with quote/unquote, I wanted to do a trick, but it didn’t want to be done. Here’s what I did and what come out :

user=> (let [x '#(inc 1)] `(1 ~x))
(1 (fn* [] (inc 1)))

But what I wanted was :

(1 2)

Can you help me do that ? 🙂

And also explain what “part” of Clojure you are using…

Answer 1

You can use eval:

user=> (let [x `(inc 1)] 
         (eval `(list 1 ~x)))
(1 2)

Or more conventionally:

user=> (defmacro foo [x] 
        `(list 1 ~x))
#'user/foo
user=> (foo (inc 1))
(1 2)