From: Stefano Grioni <stefano.grioni@...>
Date: 2011-02-01T15:51:29+09:00
Subject: Decreasing range?

Hello everybody.

I just noticed a behavior I don't really get related to Range and
Enumerator.

if I write down something like (1..4).each { |i| p i } , this will print
1234
However, if I write (4..1).each { |i| p i }, nothing will be printed out
despite 4..1 is a valid range.

Can anyone explain me why this strange behavior is implemented as such,
and how can I circle that without the need to use the very ugly
1..4).each { |i| p (4-i) } ?

Thanks a lot for your answer,

Best regards

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