Converting Lisp macros to Clojure

Question

Hey everyone so I'm looking for a way to convert a lisp macro to work in Clojure I looked at some other posts talking about if you could convert but they really didn't show an example and was maybe looking for some help on this.

(defmacro n-of (n form) 
  (let ((lst-sym (gensym)) 
        (i-sym (gensym))) 
    `(let ((,lst-sym ())) 
       (dotimes (,i-sym ,n) 
         (push ,form ,lst-sym)) 
       (nreverse ,lst-sym))))

hernan · Accepted Answer · 2016-04-04 22:44:59Z

2

For lisp macro i assume Common Lisp macro.

(defmacro n-of [n & form]
  `(let [f# #(do ~@form)]
     (take ~n (repeatedly f#))))

where the & is like &rest or &body. #() is (lambda...). ~@ is ,@-. '~' is ','.

answered Apr 4, 2016 at 22:44

hernan

5825 silver badges10 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

kennytilton Over a year ago

...and the f# nicely saves us having to invoke gensym.

kennytilton Over a year ago

If we go with the original in which the form is a single sexpr, could we do?: (defmacro n-of [n form] `(take ~n (repeatedly ~form)))

Collectives™ on Stack Overflow

Converting Lisp macros to Clojure

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related