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https://www.tsingfun.com/ilife/tech/212.html 

国务院:网速提40%流量不清零 三运营商尚未回应 - 资讯 - 清泛网 - 专注C/C+...

...促进提速降费。 总理还指出,降低网费和流量费,这不政府的决定,而“不降不行”的市场选择。企业降费后,事实上会推动流量消费的增加,实现薄利多销,最终也会提高企业的经营效益。 他解释说,当前加快推进信...
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tcp加速技术解决方案 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...的可用性和解决并发量的增长。虽然硬件越来越便宜,但一味增加机器会造成大量的维护成本和非高峰时候资源的闲置。 结合对现有机器的优化和合理的资源配置,提高网络带宽的利用率,才更有效的解决方法。 现状 当...
https://www.tsingfun.com/it/tech/1142.html 

Office在线预览及PDF在线预览的实现方式大集合 - 更多技术 - 清泛网 - 专注...

...点: 1、有效的保护的源文件及文件的复制,不可复制也缺点。 2、源码自己的,版权有保证。 缺点: 1、服务器上必须安装Office软件。 2、导出PDF文件本身个打印过程,Excel页面格式未设置,会出现一张表格打印出多...
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[精华] VC中BSTR、Char和CString类型的转换 - C/C++ - 清泛网 - 专注C/C++及内核技术

...TCHAR[theString.GetLength()+1]; _tcscpy(lpsz, theString); 需要说明的,strcpy(或可移值Unicode/MBCS的_tcscpy)的第二个参数 const wchar_t* (Unicode)或const char* (ANSI),系统编译器将会自动对其进行转换。 方法三,使用CString::GetBuffer。例如: CSt...
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Running a specific test case in Django when your app has a tests directory

...s what I dug up. The DjangoTestSuiteRuner uses a method called build_test(label) that figures out what test cases to run based on the label. Looking into this method it turns out they're doing a getattr() on either the "models" or "test" module. This means if you return a suite the test runner is...
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C++中智能指针的设计和使用 - C/C++ - 清泛网 - 专注C/C++及内核技术

C++中智能指针的设计和使用 智能指针(smart pointer)存储指向动态分配(堆)对象指针的类,用于生存期控制,能够确保自动正确的销毁动态分配的对象,防止内存泄露。它的一种通用实现技术使用引用计 智能指针(smart p...
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Remove the legend on a matplotlib figure

...fig.add_subplot(111) ax2 = ax1.twinx() ax1.plot(range(10), range(10, 20), label='line 1') ax2.plot(range(10), range(30, 20, -1), label='line 2') fig.legend() fig.legends = [] plt.show() share | ...
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C#位运算符(C#按位与、按位或 等) - 更多技术 - 清泛网 - 专注C/C++及内核技术

...型运算对象按位进行逻辑运算。按位进行逻辑运算的意义:依次取被运算对象的每个位,进行逻辑运算,每个位的逻辑...(详解1) 在C#中可以对整型运算对象按位进行逻辑运算。按位进行逻辑运算的意义:依次取被运算对...
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Find maximum value of a column and return the corresponding row values using Pandas

...ace Kansas Value 894 Name: 7 Note that idxmax returns index labels. So if the DataFrame has duplicates in the index, the label may not uniquely identify the row, so df.loc may return more than one row. Therefore, if df does not have a unique index, you must make the index unique befo...
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Use RSA private key to generate public key?

...on literature). Neither one is mathematically private or public, those are labels which are arbitrarily assigned upon creation. They could just as easily be assigned in reverse. Generating one from the other is an equivalent problem. The .pem format contains a whole bunch of information, including b...