里面system.Data.dll可以删除,unity2019的好像不需要导入这个dll文件了(我的unity版本2019.4.5f1)unity设置 .NET调成4.X 其他dll文件放在unity Plugins文件夹下

Qt中调用QAxObject方式访问excel表。可以基于这个demo写excel表导出、导入。为了方便使用，将excel访问功能封装了excelHelper类。

cad文本直接转到Excel，很方便的工具

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C+++从入门到精通最新完整清晰版.pdf )

php+mysql从入门到精通源代码.zip

最近用Excel做了一个任务进度计划表，（用Excel模仿专业的任务管理软件的功能），如有需要，欢迎大家使用。

学习system generator前找到了这本书，同样的simulink环境可学习下

PostgreSQL-从入门到精通 洞庭湖的泥鳅翻译版 PostgreSQL is a powerful, open source object-relational database system. It has more than 15 years of active development and a proven architecture that has earned it a strong reputation for reliability, data integrity, and correctness. It runs on all major operating systems, including Linux, UNIX (AIX, BSD, HP-UX, macOS, Solaris), and Windows. It is fully ACID compliant, has full support for foreign keys, joins, views, triggers, and stored procedures (in multiple languages). It includes most SQL:2008 data types, including INTEGER, NUMERIC, BOOLEAN, CHAR, VARCHAR, DATE, INTERVAL, and TIMESTAMP. It also supports storage of binary large objects, including pictures, sounds, or video. It has native programming interfaces for C/C++, Java, .Net, Perl, Python, Ruby, Tcl, ODBC, among others, and exceptional documentation.

ABAP开发从入门到精通_高清自学版 SAP+ABAP开发从入门到精通 SAP开发自学必读 SAP SAP开发自学入门到精通完整版HANA开发