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jeffrydegrande/gist:664734

Created November 5, 2010 20:24
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gistfile1.rb
def self.guid_from_entry(entry)
def entry.available_for_guid?(sym)
respond_to?(sym) && send(sym).present?
end
[:guid, :url, :content, :summary].each do |sym|
entry.available_for_guid?(sym) and return Digest::MD5.hexdigest(entry.send(sym))
end
end
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