Try: (defmacro infix [[x f y]] `(~f ~x ~y)))
On Mon, Sep 26, 2011 at 9:57 AM, Ruslan Sorokin <soro...@oogis.ru> wrote: > ** > Hi dear clojurians! > > From Clojure documentation (http://clojure.org/evaluation): > > ..If the operator of a call is a symbol that names a global var that is a > macro function, that macro function is called and is passed the * > unevaluated* operand forms. > > But: > > ru@ru-desktop ~/clojure/clojure-1.2.1 $ java -cp clojure.jar clojure.main > Clojure 1.2.1 > user=> (defmacro infix [e] `(let [[x# f# y#] ~e] (f# x# y#))) > #'user/infix > user=> (infix [5 + 4]) > 9 > user=> (infix (5 + 4)) > java.lang.ClassCastException: java.lang.Integer cannot be cast to > clojure.lang.IFn (NO_SOURCE_FILE:0) > user=> > > So, it is tried to evaluate the form (5 + 4). Is not it? > As I remember from Lisp, UNevaluation of arguments is one of the main > properties of macros. Am I right? > Thank you in advance for the any explanations. > > Sincerely, > Ru > > -- > 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 -- 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
