方法可用于清除所有内部缓冲区并确保将所有数据写入基础数据源或储存库。

Method can be used to clear any internal buffers and ensure that all data has been written to the underlying data source or repository.

youdao

这里有一个程序，它演示如何从一个Excel文件抽取、修改(所有数字都乘以2)数据以及将数据写入新的Excel文件。

Here's a program that will demonstrate how data can be extracted from an Excel file, modified (all the Numbers are multiplied by 2), and written to a new Excel file.

youdao

当所有数据全部写入之后，就需要设置eof(文件结束参数)。

When all the data have been written, set the eof (end-of-file) argument.

youdao

这种方法也是空间有效的，因为无需复制(除非重新写入文件系统中的所有数据)。

This approach is also space efficient, because no copy is required (unless all data in the file system is rewritten).

youdao

这种方法也是空间有效的，因为无需复制(除非重新写入文件系统中的所有数据)。

This approach is also space efficient, because no copy is required (unless all data in the file system is rewritten).

youdao