Comments on: Lisp macros revisited http://www.adztec-independent.de/2008/12/lisp-macros-revisited/ Programming Ruby / JRuby / Rails / Common Lisp by Christopher Bertels Sat, 11 Sep 2010 23:34:51 +0200 http://wordpress.org/?v=2.8.5 hourly 1 By: foo http://www.adztec-independent.de/2008/12/lisp-macros-revisited/comment-page-1/#comment-21 foo Tue, 16 Dec 2008 11:37:25 +0000 http://www.adztec-independent.de/?p=90#comment-21 TOP, TMP and START interfere with user code. The user might also want to use those symbols. Destructuring like that won't work. Think of a list: (nil nil nil). CAR of that list is nil. The usual way to write recursion is (if (null list) (end-clause) (let ((element (first list)) (rest (rest list))) ...). Also think if you really want to rebind the foreach variable in each iteration? TOP, TMP and START interfere with user code. The user might also want to use those symbols.

Destructuring like that won’t work. Think of a list: (nil nil nil).
CAR of that list is nil. The usual way to write recursion is (if (null list) (end-clause) (let ((element (first list)) (rest (rest list))) …).

Also think if you really want to rebind the foreach variable in each iteration?

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