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Why will (1..5).each iterate over 1,2,3,4,5, but (5..1) will not? It returns the Range instead.
1.9.2p290 :007 > (1..5).each do |i| puts i end
1
2
3
4
5
=> 1..5
1.9.2p290 :008 > (5..1).each do |i| puts i end
=> 5..1
The easiest way to do that is use downto