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以下代码演示了一个 ruby​​ (1.8.7) for 循环，其中从 excel 读取的列和标题保存为对象（对象属性：标题=字符串，内容=字符串数组）。当我阅读几列时，我想将它们保存为对象数组。

问题是每个循环在增加数组“矩阵”并成功存储新对象的同时，似乎用最新的对象覆盖了矩阵数组的先前元素。当我遍历完成的数组时，我只得到同一个对象的 x 个实例。

  column_count = count_columns(worksheet)
  row_count = count_rows(worksheet)

  matrix = Array.new
  #i don't think header needs to be an array in the below loop, but anyway...
  header = Array.new
  contents = Array.new

  for column in 0..column_count - 1
    header[column] = worksheet.Cells(1, column + 2).Value
    for row in 0..row_count
      contents[row] = worksheet.Cells(row + 2, column + 2).Value
    end
    matrix[column] = Worksheet_Column.new(header[column], contents)
  end


  #looping after the array was created puts the same information in each iteration
  for column in 0..matrix.length - 1
    puts "loop = #{column}"

    puts matrix[column]
  end
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1 回答 1

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好吧，我仍然没有看到允许内容向后写入的基本错误，但是注意到问题发生在内容而不是标题上，这个解决方案已经成功。

for column in 0..column_count - 1
  contents[column] = Array.new
  header[column] = worksheet.Cells(1, column + 2).Value
  for row in 0..row_count
    contents[column][row] = worksheet.Cells(row + 2, column + 2).Value
  end
  matrix[column] = Worksheet_Column.new(header[column], contents[column])
end
于 2013-03-01T13:51:26.517 回答