merits of Lisp vs Python

[Frank Buss]

Steven D'Aprano wrote:

> Yes. But you can't redefine 1+2 in Python, at least not without hacking
> the interpreter. Can you redefine (+ 1 2) in Lisp? 

Yes, that's no problem and works without warnings and in every Common Lisp
implementation:

CL-USER > (shadow '+)
T

CL-USER > (defun + (&rest rest) (apply #'- rest))
+

CL-USER > (+ 3 1)
2

-- 
Frank Buss, fb at frank-buss.de
http://www.frank-buss.de, http://www.it4-systems.de