大约有 900 项符合查询结果(耗时:0.0190秒) [XML]

https://www.tsingfun.com/ilife/tech/310.html 

阿里的线下野心 - 资讯 - 清泛网 - 专注C/C++及内核技术

...泰宣布开启O2O破冰之旅,银泰商业投入线下35个实体店的资源支持天猫“双11”。从当时情况来看,双方的合作停留于浅层次的营销手法上,并没有想象中的“颠覆”感。 但到了2014年,阿里在“双12”期间用移动支付“轰炸”了...
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如何查看Oracle用户的SQL执行历史记录? - 数据库(内核) - 清泛网 - 专注C/...

...没有时间顺序关系、没有执行用户信息,只有执行次数与资源统计。 从dba_hist_sqlstat可以看到AWR snapshot之间的SQL统计信息,与v$sqlstats比不受实例重启的影响,因为实例重启之后v$sqlstats中的信息就清除了。 【方法三:session tra...
https://www.tsingfun.com/ilife/tech/813.html 

技术人员如何创业《一》—— 产品及想法 - 资讯 - 清泛网 - 专注C/C++及内核技术

...品用户的心理、选择了合适的营销方式、整合自身独有的资源优势(哈佛)。其实他这个php网站我想现在很多学过web编程的都可以制造出来,有几个能做成facebook呢? 在《中国合伙人》中也有个场景,成东青因为在外面开小班...
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source of historical stock data [closed]

...ship you a drive with terabytes of data. If I remember right its about $3k-4K per year of data. But trust me, once you understand how hard it is to get good intraday data, you won't think this is very much money at all. Not to discourage you but to get good data is hard, so hard in fact that many h...
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Boost程序库完全开发指南——深入C++“准”标准库高清PDF版 - 文档下载 - ...

...是比较及时的,是不可多得的好材料。尽管有如此方便的资源,我还是比较期待有一本国人写的,Boost 相关的书,我相信国人对我们使用的 C++ 风格和水平有更好的理解,能够写出更适合我们真实需求的书。所以后来手上才有这...
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How do malloc() and free() work?

... virtual memory manager can handle (most often multiples of 512 bytes e.g. 4KB). So returning 40 Bytes to the OS will just not work. So what does free do? Free will put the memory block in its own free block list. Normally it also tries to meld together adjacent blocks in the address space. The fr...
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Why is the .bss segment required?

...ny uninitialized buffers 4096 bytes in length. Would you want all of those 4k buffers to contribute to the size of the binary? That would be a lot of wasted space. – Jeff Mercado Mar 2 '12 at 15:02 ...
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What is the difference between localStorage, sessionStorage, session and cookies?

...domain. This gives you considerably more space to work with than a typical 4KB cookie. The data is not sent back to the server for every HTTP request (HTML, images, JavaScript, CSS, etc) - reducing the amount of traffic between client and server. The data stored in localStorage persists until explic...
https://www.tsingfun.com/ilife/idea/861.html 

低效程序员的7个坏习惯 - 创意 - 清泛网 - 专注C/C++及内核技术

...津乐道,”Liz Eggleston,Course Report——提供学习编码在线资源的联合创始人这样说道。缺乏激情会导致懒散。懒散会导致工作错误。软件工程师需要重新找回自己的激情。 2、不喜欢测试代码 软件工程师曾一度认为测试代码不...
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Deep Learning(深度学习)学习笔记整理系列之(四) - 大数据 & AI - 清泛...

...网络 十、总结与展望 十一、参考文献和Deep Learning学习资源 接上 九、Deep Learning的常用模型或者方法 9.1、AutoEncoder自动编码器 Deep Learning最简单的一种方法是利用人工神经网络的特点,人工神经网络(ANN)本...