One of the best ways to learn clojure is to take a look at the minimal and excellent source code:
http://clojuredocs.org/clojure_core/clojure.core/cons (def ^{:arglists '([x seq]) :doc "Returns a new seq where x is the first element and seq is the rest." :added "1.0" :static true} cons (fn* ^:static cons [x seq] (. clojure.lang.RT (cons x seq)))) calls: https://github.com/clojure/clojure/blob/master/src/jvm/clojure/lang/RT.java static public ISeq cons(Object x, Object coll){ //ISeq y = seq(coll); if(coll == null) return new PersistentList(x); else if(coll instanceof ISeq) return new Cons(x, (ISeq) coll); else return new Cons(x, seq(coll)); } You can see it creates a new list. Not sure why conceptually, but there it is. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
