From: Clemens Hintze <c.hintze@...>
Date: 2000-12-03T20:40:01+09:00
Subject: [ruby-talk:6761] Re: Array Intersect (&) question

>>>>> "matz" == Yukihiro Matsumoto <matz@zetabits.com> writes:

Hi,

(...)

    matz> Using a hash makes it pretty fast, but it does not preserve
    matz> the original order.  If no one requests order preservation,
    matz> I will use hashes in &, |, and uniq.  What's your opinion?

for me this would be ok! If I want to rely on order, I would simply
order it afterwards. The operators &, | are SET operations. In a set
neither the order nor the cound is important!

So I have to confess that every time I used them, I had ordered my
results anyway, as I did not assume any order. So that there is an
order here violates my POLS ;-)

Speed is an issue here, IMHO.


    matz> 							matz.

\cle