From: Boson <user@...>
Date: 2008-04-10T23:15:04+09:00
Subject: Re: What should this print?

With more context:

It's interesting that these two product different output:

old = nil
[1,1].each do |n|
   if n != old
     x = 1
     old = n
   end
   p x
end

old = nil
for n in [1,1]
    if n != old
      x = 1
      old = n
    end
    p x
end