From: Joshua Muheim <forum@...>
Date: 2007-11-08T02:36:15+09:00
Subject: Re: Is there a "||" that treats "" also as false?

I finally came up with this:

class String
  def |(alternative)
    (self.nil? or self == "") ? alternative : self
  end
end

class NilClass
  def |(alternative)
    alternative
  end
end

Is this OK? Or do I accidently override some existing method? Because 
without the definition above

nil | "asdf"

returns

true!
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