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记一次LVS/Nginx环境下的访问控制 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...。莫非小偷已经突破锁头的限制?不能够啊!直觉告诉我问题应该和 LVS 有关,可惜我对 LVS 的了解极其匮乏,唯一知道的线索就是项目用的是 FULLNAT 模式,那就以此为切入点开始挖掘: LVS FULLNAT 所谓 FULLNAT 模式,是指当用...
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Why is Java's boolean primitive size not defined?

...are managed via your getters and setters. However, you'll pay a penalty in CPU time that is probably bigger than the penalty in memory. share | improve this answer | follow ...
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How can I generate a unique ID in Python? [duplicate]

...in newer versions, but most people probably don't have that yet, so I generally avoid this module. Caused me major headaches with listen sockets... – Glenn Maynard Jul 31 '09 at 3:14 ...
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Which websocket library to use with Node.js? [closed]

... Getting the ball rolling with this community wiki answer. Feel free to edit me with your improvements. ws WebSocket server and client for node.js. One of the fastest libraries if not the fastest one. websocket-node WebSocket server and ...
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Macro vs Function in C

...uct webpage page; page.numButtons = 2; num_button_holes(page) -> 8 Finally, macros can be difficult to debug, producing weird syntax errors or runtime errors that you have to expand to understand (e.g. with gcc -E), because debuggers cannot step through macros, as in this example: #define prin...
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移动前端开发之viewport的深入理解 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...是,devicePixelRatio在不同的浏览器中还存在些许的兼容性问题,所以我们现在还并不能完全信赖这个东西,具体的情况可以看下这篇文章。 devicePixelRatio的测试结果: 三、PPK的关于三个viewport的理论 ppk大神对于移动设备上...
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msvcr110d.dll!_CrtIsValidHeapPointer(const void * pUserData) 行 2036 ...

...分配的堆。这样就不会存在多个释放过程,也就不会出现问题了。 可能原因2:delete释放了常字符串。如 char *p = "abc"; delete p; 可能原因3: CString m_strTest; ... GetPrivateProfileString(INI_SECTION, "test", "", m_strTest.GetBuffer(), MAX_PATH...
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How can I maintain fragment state when added to the back stack?

... back stack. However, when I return to FragmentA (by pressing back), a totally new FragmentA is created and the state it was in is lost. I get the feeling I'm after the same thing as this question, but I've included a complete code sample to help root out the issue: ...
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【PM干货】2015年阿里业务型PM笔试题 - 项目管理 - 清泛网 - 专注C/C++及内核技术

...界面优化方案。 3、淘宝过程中经常存在用户信息泄露的问题,而快递公司必须知道买家的联系方式,淘宝商家利用这个联系方式向用户发送营销信息。 请设计一个流程来改善这个问题,必须包括: 1)分析淘宝卖家、买家和...
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浮点数在内存中的表示 - C/C++ - 清泛网 - 专注IT技能提升

...:大家面试的时候可能会经常遇到考察浮点数与零比较的问题,是简单的 f == 0 吗?当然不是,正确的写法应该是f > -1e-7 && f < 1e-7,为什么呢? 浮点型,由于精度关系(float精度:2^23 = 8388608,一共7位,同理double 16位),最小分...