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How does BLAS get such extreme performance?
...le of what can be done with SIMD assembler over C++ code, see some example iPhone matrix functions - these were over 8x faster than the C version, and aren't even "optimized" assembly - there's no pipe-lining yet and there is unnecessary stack operations.
Also your code is not "restrict correct" - ...
不同品牌的防火墙组成高可靠性集群 - 更多技术 - 清泛网 - 专注C/C++及内核技术
.../iproute2/rt_tables这个文件里，一般0编号
的table对应的别名为upspec，255编号对应的别名为local，254和253对应的别名分别为main和default，我们通常用route命令配置和查看的路由表信息为别名
为main的路由表信息。
2、路由规则负责定义...
思维导图软件 XMind 与 FreeMind 的对比 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...件是 FreeMind 和 XMind。FreeMind历史悠久，当属经典；XMind作为后起之秀，大有赶超之势。同...思维导图类软件中，最有影响力的开源免费软件是 FreeMind 和 XMind。FreeMind历史悠久，当属经典；XMind作为后起之秀，大有赶超之势。同作...
如果携程决心战略性亏损到底，去哪儿怕是只剩一条路可走 - 资讯 - 清泛网 -...
...利润，但同比增长仅27%。同时这是携程继2014年Q4后净亏损为2.24亿元后的的再度亏损。尽管在财报电话会议上，携程CFO王肖璠表示：预计第二季度将恢复盈利,而对比去年Q2利润9100万，上半年占了全年净利润的86%，所以携程是铁了...
How to get the raw value an field?
... @MotiKorets doesn't work for entering floating point numbers as iPhones don't put a decimal point on the keyboard. Unfortunately devs are pretty screwed at the moment as far as providing a nice floating point entry UX...
– Andy
Dec 17 '15 at 16:27
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Why use AJAX when WebSockets is available?
...xed server and browser support. Let me just diffuse that a bit. While iOS (iPhone, iPad) still supports the older protocol (Hixie) most WebSockets servers support both Hixie and the HyBi/IETF 6455 version. Most other platforms (if they don't already have built-in support) can get WebSockets support ...
淘宝网采用什么技术架构来实现网站高负载的 - 更多技术 - 清泛网 - 专注C/C...
...一个系 统的伸缩性的好坏取决于应用的状态如何管理。为什么这么说呢?咱们试想一下，假如我们在session中保存了大量与客户端的状态信 息的话，那么当保存状态信息的server宕机的时候，我们怎么办?通常来说，我们都是通过集...
Do I encode ampersands in ?
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+ isn't respected in mailto links in the native iPhone mail client currently, for what it's worth.
– Ryan Olson
Oct 8 '13 at 20:17
1
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Why are Objective-C delegates usually given the property assign instead of retain?
...ted environment. I'm mostly concerned with a non-GC based environment (eg: iPhone).
4 Answers
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小心！创业者不可不知的互联网家装惊天伪命题 - 资讯 - 清泛网 - 专注C/C++...
...行业。互联网家装之所以会受到如此多的关注，主要是因为家装行业本身的市场规模巨大，产业链延伸很长，涉及到的环节很多，人们与家装的关系也最为密切，改造的难度也最大。尽管如此，却丝毫都改变不了互联网对家装行...