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Memcached下一站:HandlerSocket! - 更多技术 - 清泛网 - 专注C/C++及内核技术

...解决方案,它通过插件的方式赋予MySQL完整的NoSQL功能,原理上讲,它跳过MySQL中最耗时的语法解析,查询计划等步骤,直接读取数据,如果内存够大,能装下索引,MySQL的查询效率能提高若干倍! 性能测试:Using MySQL as a NoSQL ...
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Is multiplication and division using shift operators in C actually faster?

... optimised approach #define N 0 int x; .word x xor registerA, registerA x *= N; move x -> registerA move x -> registerB A = B * immediate(0) store registerA -> x ...............do something more with x...
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余佳文公开道歉: “一亿分红”本质上是吹嘘炒作 - 资讯 - 清泛网 - 专注C/...

... 为了向所有人证明我的醒悟,重新取信于社会,我决定我个人持有的股份里,拿出总额的百分之十,分发给我的团队,作为对我“一亿分红”食言的补偿和道歉,作为此次事件的惩罚和教训。 创业不容易。我请求大家给我...
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How does the Comma Operator work

...following syntax possible and meaningful: keywords = "and", "or", "not", "xor"; Notice that due to operator precedence, the code is (intentionally!) identical to (((keywords = "and"), "or"), "not"), "xor"; That is, the first operator called is keywords.operator =("and") which returns a proxy o...
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Zero-based month numbering [closed]

...m Assembly programmers. Instead of assigning 1 to the count register, they XOR'ed the register with itself, which was slightly faster in CPU cycles. This meant that counting would start with 0 and would always be up to the length of elements, excluding the last one. Also, the use of zero is also po...
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App Inventor 2 SQLite 拓展:超流行兼容主流SQL语法的迷你本地数据库引擎...

...继续! 背景 在编写此扩展之前,我未进行过任何 Android 编程。我突然需要一款小型应用,这将是一次完美的学习体验。小处着手,我遇了 App Inventor 以及该平台的所有变体。经过一番研究,我得出结论...
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Write bytes to file

... 6 bytes into a byte array and writes it to another byte array. It does an XOR operation with the bytes so that the result written to the file is the same as the original starting values. The file is always 6 bytes in size, since it writes at position 0. using System; using System.IO; namespace Co...
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MFC OnEraseBkgnd浅析 - C/C++ - 清泛网 - 专注C/C++及内核技术

...上灰色的底色了。 比较好的做法是直接将绘图的程序OnPaint()移OnEraseBkgnd()来做,如下所示: // m_bmpBKGND 为一CBitmap对象 且事先早已加载我们的底图 // 底图的大小与我们的窗口client大小一致 BOOL CMyDlg::OnEraseBkgnd(CDC* pDC) { ...
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大单融资后,MOOC去哪儿 - 资讯 - 清泛网 - 专注C/C++及内核技术

...,更多是因为政策红利。在大额融资后,MOOC又该何去何? MOOC融资后的高校竞争 2013年被称为中国MOOC元年。这种大型开放式网络课程在进入国内后便在一片质疑声中戴上光环,迎来了迅猛的发展。目前国内MOOC领域已分为两种...
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创业者只需要一种素质:成为某个领域的意见领袖 - 资讯 - 清泛网 - 专注C/C...

...播的一个视频,里面描述了中国80%的男士有手淫的需求,而开发了一个APP和与之匹配的智能硬件,视频全篇实际上是在说一件没有的事,但是搏得了很多人的关注。 也就是说现在你甚至不用有产品,只要大家觉得你有意思,...