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https://www.tsingfun.com/ilife/tech/351.html 

窝窝与众美联合并 新公司命名“众美窝窝” - 资讯 - 清泛网 - 专注C/C++及内核技术

...并殊途同归,但更直接,并且在O2O平台用户忠诚度普遍不高的行业环境下,窝窝这种合并获得的用户,其忠诚度要高得多,因为用户最终忠于的还是商家。 看点二 并购而非入股 做大想象空间 窝窝对众美联本次的股权合作是并...
https://www.tsingfun.com/ilife/tech/703.html 

拉里佩奇23条箴言帮你度过创业低谷 - 资讯 - 清泛网 - 专注C/C++及内核技术

...事物一直在改变,如果你的事业是稳定的,那你可能是有问题的。 编者注:或许你不知道拉里·佩奇,但一定知道谷歌。他说“你可能觉得谷歌很好用,但我仍觉得它烂透了。”你永远不会相信,就是这个人,一手缔造了谷歌...
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NVIDIA vs AMD: GPGPU performance

...to 1, and on gpgpu.org, search results (papers, links to online resources, etc) for NVIDIA outnumber results for AMD 6:1. A huge part of this difference is the amount of online information available. Check out the NVIDIA CUDA Zone versus AMD's GPGPU Developer Central. The amount of stuff there fo...
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Which is faster : if (bool) or if(int)?

...ngs like sign-extend to bring it to certain widths to put it on the stack, etc. (You can't push a byte.) When the optimizer views the AST and does its magic, however, it looks at surrounding context and "knows" when it can replace code with something more efficient without changing semantics. So ...
https://www.tsingfun.com/it/cpp/1385.html 

高并发服务端分布式系统设计概要 - C/C++ - 清泛网 - 专注C/C++及内核技术

...拆分),并时刻不要忘记备份、扩展、意外处理等讨厌的问题。说起来都比较简单,但设计和实现起来,就会比较困难。以前我的文章,都是“从整到零”的方式来设计一个系统,这次咱们就反着顺序来。 那我们首先来看,我...
https://www.tsingfun.com/it/tech/1472.html 

LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...GO使用指南LINGO使用指南LINGO是用来求解线性和非线性优化问题的简易工具。LINGO内置了一种建立最优化模型的语言,可以简便地表达大规模问题,利用LIN... LINGO是用来求解线性和非线性优化问题的简易工具。LINGO内置了一种建立...
https://www.tsingfun.com/ilife/tech/638.html 

刘强东“一元年薪”背后的O2O棋局 - 资讯 - 清泛网 - 专注C/C++及内核技术

...类、鲜花、外卖送餐等各类生活服务项目,并基于移动端定位实现2小时内快速送达。 据京东方面透露,“京东到家”如今已开通7个城市,目前该业务订单数量快速增长,盈利模式是京东和超市分成。 刘强东称,长期来看,“...
https://www.tsingfun.com/it/tech/1323.html 

VM 磁盘空间扩容引起的一些问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术

VM 磁盘空间扩容引起的一些问题TOP如下存储分区如下ESX1下挂载情况如下图ESX2下挂载情况如下图现在有个需求,lun60的空间偏大,缩小为1T,LUN80的空间偏小,扩大为1.5T先...TOP 如下 存储分区如下 ESX1下挂载情况如下图 ...
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What is the difference between atomic / volatile / synchronized?

... This works in single thread but nowadays, in the era of multi-core, multi-CPU, multi-level caches it won't work correctly. First of all it introduces race condition (several threads can read the value at the same time), but also visibility problems. The value might only be stored in "local" CPU mem...
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How do I prevent an Android device from going to sleep programmatically?

...PowerManager.SCREEN_DIM_WAKE_LOCK, "My Tag"); wl.acquire(); // screen and CPU will stay awake during this section wl.release(); There's also a table on this page that describes the different kinds of wakelocks. Be aware that some caution needs to be taken when using wake locks. Ensure that you ...