des加密解密互通 一周的成果，两种语言互通。

In Modern C++ Design, Andrei Alexandrescu opens new vistas for C++ programmers. Displaying extraordinary creativity and virtuosity, Alexandrescu offers a cutting-edge approach to software design that unites design patterns, generic programming, and C++, enabling programmers to achieve expressive, flexible, and highly reusable code. The book introduces the concept of generic components, reusable design templates that enable an easier and more seamless transition from design to application code, generate code that better expresses the original design intention, and support the reuse of design structures with minimal recoding. The author then shows how to apply this approach to recurring, real-world issues that C++ programmers face in their day-to-day activity. All code is available on the Web, along with Alexandrescu's downloadable Loki C++ library, which provides powerful out-of-the-box functionality for virtually any C++ project. For experienced C++ programmers who have at least some familiarity with the Standard Template Library (STL).

无密码、注释、签名版本！ 非文字版 希望大家喜欢

SME-Recent Advances in Mineral Processing Plant Design

ext-ms-win-gdi-desktop-l1-1-0.dll 用于解决这个dll文件丢失问题，下载后将此文件放置在相关文件根目录下，即可解决丢失问题

expert one-on-one，一本讲述Spring MVC开发的经典书，英文版，带目录，你值得拥有

这是 OLS 批量梯度下降算法的简单实现。 在文件的末尾，我们使用矩阵形式的标准 OLS 来检查梯度下降算法是否提供了合理的结果。 如果算法不收敛并且梯度下降值与普通 OLS 值“太远”，请更改学习率、初始猜测或算法中的其他内容。

A Practical Handbook on High Speed PCB and System Design,

[Gray___Meyer]_Analysis_and_Design_of_Analog_Integrated_Circuits_5th_cropped.pdf

DES加密中，key必须为8字节。java代码中要输入的加密内容可以无限长，但是C语言中每次只能加密解密8个字节，需要自己去封装更长数据的加解密（只要循环处理即可）