On May 4, 11:31 pm, André Thieme <splendidl...@googlemail.com> wrote: > Am 04.05.2011 14:50, schrieb Simon Katz: > > >> For example Common Lisp does support this. > > > That's not true, or at least it's only partly true. > > > Here's a translation of your example into Common Lisp (I added a use > > of a# in the macro to avoid compiler optimization making the problem > > go away): > > > (defun f (x) (lambda () x)) > > (defparameter foo (f 0)) > > (defmacro bar () `(let ((a# ,foo)) a#)) > > (defun call-bar () (bar)) > > > I can compile this within a Lisp image (not compiling to file), and > > call call-bar with no problems. > > > But if I try to compile to file, compilation fails with the error > > Object #<Closure (F . 1) 20094F62> is of type FUNCTION which is not > > externalizable > > You need to wrap it into eval-when or separate functions and macros from > their use into different files and make sure the right load order is > used. Then this will work in CL. > > Andr
It is not possible to write out a function object (something returned by lambda, Common Lisp's equivalent of fn) to a compiled file. No mix of eval-when, separating functions and macros, and load order can change that. Simon -- 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
