From: Devi Web Development <devi.webmaster@...>
Date: 2007-10-26T05:10:15+09:00
Subject: Re: Intervals in Ruby

On 10/25/07, Just Another Victim of the Ambient Morality wrote:
> > What i find strage about ranges is that:
> > (0..3).to_a # => [0, 1, 2, 3]
> > but
> > (3..0).to_a # => []
>
>     I find this strange, as well...
>     Aside from breaking many lines of code, how bad would it be to change
> it?

Ranges are based upon comparisons of what is less than something else.
In fact, if I recall correctly, to generate an array (Range#to_a)
calls next on the start of the range until it reaches the end of the
range. With your range (3..0) it would go [3,4,5...Infinity], so ruby
opts to produce an empty array.


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Daniel Brumbaugh Keeney
Devi Web Development
Devi.WebMaster@gMail.com
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