From: "David A. Black" <dblack@...>
Date: 2009-02-10T23:00:24+09:00
Subject: Re: a better way to do this job?

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Hi --

On Tue, 10 Feb 2009, Tom Link wrote:

>> � �ruby -e 'a = [:a,:b,:c]; b = []; while true; b << a[0,3]; end'
>
> That's a little bit unfair though. If you pushed an infinite number of
> object of whatever class, you'd eventually run out of memory.

I'm just making the point that even though two arrays may contain the
same objects (not copies), arrays are not cost-free, so creating
intermediate arrays may well be an issue.

> I personally find #first() rather confusing (BTW [1,2,3].first
> (3).class => Array).

Yes, that's right -- I've over-enumeratored my response :-)


David

-- 
David A. Black / Ruby Power and Light, LLC
Ruby/Rails consulting & training: http://www.rubypal.com
Coming in 2009: The Well-Grounded Rubyist (http://manning.com/black2)

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