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Message from discussion Lisp refactoring puzzle
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WJ  
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 More options Jul 12 2011, 11:27 am
Newsgroups: comp.lang.lisp, comp.lang.python
Followup-To: gnu.emacs.help
From: "WJ" <w_a_x_...@yahoo.com>
Date: 12 Jul 2011 15:27:27 GMT
Local: Tues, Jul 12 2011 11:27 am
Subject: Re: Lisp refactoring puzzle
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Xah Lee wrote:
> 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.

Ruby has them.

Intersection:

[2,3,5,8] & [0,2,4,6,8]
    ==>[2, 8]

Union:

[2,3,5,8] | [0,2,4,6,8]
    ==>[2, 3, 5, 8, 0, 4, 6]


 
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