Re: More on lists and sets
From: Gene Wirchenko <genew_at_ucantrade.com.NOTHERE>
Date: Tue, 28 Mar 2006 13:08:15 -0800
Message-ID: <hd6j221noh7fvpmk322efm3gvvqsgqlol3_at_4ax.com>
Date: Tue, 28 Mar 2006 13:08:15 -0800
Message-ID: <hd6j221noh7fvpmk322efm3gvvqsgqlol3_at_4ax.com>
On 28 Mar 2006 11:10:00 -0800, "vc" <boston103_at_hotmail.com> wrote:
>David Cressey wrote:
>[...]
>>
>> Let's try a few more cases:
>>
>> [4, 3, 2, 1] intersect [2, 4, 6, 8] == [4, 2]
>> [2, 4, 6, 8] intersect [4, 3, 2, 1] == [2, 4]
>>
>> Are these right?
>
>Yes.
>
>>
>> Does this mean that list intersection is not commutative?
>
>Yes.
What is [4, 3, 2, 1, 4] intersect [2, 4, 6, 8]? And why?
Sincerely,
Gene Wirchenko Received on Tue Mar 28 2006 - 23:08:15 CEST