digama.m calculates双（x）＝d（日志（γ（X）/ DX））

几乎所有的面向对象编程的概念一直是 此项目中使用。

简单的文件打包管理工具.虽然简单，但原理都是一样，希望对有用的人有所启发.做到资源的统计管理,加密管理等.-simple document management tool package. Although simple, but the principle remains the same. hope to a useful source of inspiration. the statistics do resources management, encryption management.

获取文件属性（大小、创建时间、修改时间、访问时间等）-access to file attributes (size, creation time, the modification time, the time for the visit)

研究文件拷贝技术的测试程序-research paper copy of the test procedure

文件读写监视，带有VXD源代码-document literacy surveillance, with the source code VXD

很好用的AE文字插件-good with the language plug-AE

一个直接读写excel文件行、列、求部份数学函数的源码。-A direct reading and writing excel file rows, columns, and the source part of mathematical functions.

类似于电子日记，可更新日期，选择天气预报，同时可保存每天的记录-similar to the electronic diary, updated date, the selection weather forecast, kept daily records

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实例 49－－文件的读写，可以自由的下载-Examples of 49- to read and write files, you can free download