Lisp refactoring puzzle

Petter Gustad newsmailcomp6 at
Tue Jul 12 15:02:51 EDT 2011

Xah Lee <xahlee at> writes:

> it's funny, in all these supposedly modern high-level langs, they
> don't provide even simple list manipulation functions such as union,
> intersection, and the like. Not in perl, not in python, not in lisps.

In Common Lisp you have:

CL-USER> (union '(a b c) '(b c d))
(A B C D)
CL-USER> (intersection '(a b c) '(b c d))
(C B)

.sig removed by request. 

More information about the Python-list mailing list