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reuben.cornel

Have you considered using cl-xml? It seems to be a pretty neat library. You can find it here http://common-lisp.net/project/cl-xml/

reuben.cornel

Perhaps this might the more accurate functional version?

Code: Select all

(defun price-order-total (item-list)
  (apply #'+ 
	 (mapcar #'(lambda(item)
		     (destructuring-bind (i quantity unit-price) item
		       (declare (ignore i))
		       (* unit-price quantity)))
		 item-list)))

reuben.cornel

Nice reply Ramarren, liked your method of explanation.

reuben.cornel

taylor_venable wrote: I'd also be interested to see any alternate implementations of and;

Here's my two cents...

Code: Select all

(defun my-and(&rest bool-list)
  (null (remove t bool-list)))

reuben.cornel

I don't know if I have understood your question right. Are you trying to achieve what the code below does? (defmacro increment-function-generator(function-name increment) "Macro that generates a function that increments its input by a specific pre-determined value" `(defun ,function-name(x...

reuben.cornel

I wrote up two functions that do the same thing, except that for the first one you need to reverse the result. (defun reverse-recursive-c-series(n a) (if (zerop n) (list a) (let ((return-a (reverse-recursive-c-series (- n 1) a))) (cond ((evenp (- n 1)) (cons (log (first return-a)) return-a)) ((oddp ...

reuben.cornel

I don't know if SICP could be classified as lisp book. Yes it does talk about lisp, scheme to be more precise. But it is more of a general computer science book as it uses scheme as a means to explain general concepts.

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