Lisp refactoring puzzle
newsmailcomp6 at gustad.com
Tue Jul 12 15:02:51 EDT 2011
Xah Lee <xahlee at gmail.com> 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))
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