|
| From: | Leo Liu |
| Subject: | why is reverse a string in-place so much slower than a vector? |
| Date: | Fri, 25 Apr 2014 16:12:16 +0800 |
| User-agent: | Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (CentOS 6.5) |
(defun rev (a)
(let ((l (length a)))
(dotimes (i (floor l 2) a)
(cl-rotatef (aref a i) (aref a (1- (- l i)))))))
--
Sent from my Emacs
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