page.rb
def words
      word_list = @lines.map do |line|
        line.split(" ")
      end
      word_list.uniq
    end
# return a uniy word list of the content of this page
return a uniy word list of the content of this page
return a uniy word list of the content of this page
def words
      word_list = @lines.map do |line|
        line.split(" ")
      end
      word_list.uniq
    end
def words word_list = @lines . map do | line | line . split ( " " ) end word_list . uniq end
return a uniy word list of the content of this page
return a uniy word list of the content of this page