My best macro so far ;-) (defmacro access-slot (object &rest slot-names) `(ff:fslot-value-typed (ff:foreign-pointer-type ,object) :c (ff:foreign-pointer-address ,object) ,@slot-names)) (defmacro define-struct-getter (struct package &rest slots) (loop for s in slots do (let ((acc (intern (concatenate 'string (symbol-name struct) "-" (symbol-name s)))) (sp (intern s package))) (eval `(defmacro ,acc (object) `(access-slot ,object ',',sp)))))) because it is a macro which writes macros which uses macro. My first real world macro. On Sun, Sep 5, 2010 at 4:24 PM, Kazimir Majorinc <kazimir@chem.pmf.hr>wrote:
As first, good luck with this list!
I'm in search for best examples of "code is data" paradigm in Common Lisp. For most CL-ers, it probably means "macros", but eval, backquote, anything that processes the code as data is of interest. As "best" I think on the most surprising, powerful, sophisticated examples, not necessarily of a pedagogical value.
Imagine that someone invited you to write the presentation "Five best CL macros ... I seen" or "Five best CL macros ... I wrote." What would you chose and why?
Kazimir Majorinc
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