Hello. >
The problem is that 'rot' is a "destructive" function, i.e. it modifies its list argument. You could use 'copy' to avoid this.I would write (de split-number (N) (mapcar format (chop N)) ) (de all-rotations (N) (let SN (split-number N) (make (do (length SN) (link (copy (rot SN))) (println SN) ) ) ) ) (two minor optimizations: 'chop' can also directly work on a number, and 'L' is not needed in the loop).
Thanks for the hint for 'chop': I didn't even consider using it on something else than a string... As for replacing the 'for' by a 'do', I will confess that I totally forgot about that one! (I did attempt a 'while' but didn't like the code I got...)
I'm ashamed to say that, after tests, I realized that I didn't need to 'link' the result of the 'rot', but '(format (pack (rot SN)))'...
Regards. -- Laurent ARTAUD -- UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe
