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Better way to get type of a Javascript variable?
...swered Oct 31 '12 at 16:57
YukuléléYukulélé
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Validating email addresses using jQuery and regex
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It will not validate äüõ etc letters!!
– D.A.H
Aug 17 '14 at 17:16
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C++11 introduced a standardized memory model. What does it mean? And how is it going to affect C++ p
...n does not make reference to any particular compiler, operating system, or CPU. It makes reference to an abstract machine that is a generalization of actual systems. In the Language Lawyer world, the job of the programmer is to write code for the abstract machine; the job of the compiler is to act...
What does scale horizontally and scale vertically mean? [duplicate]
...unchanged. Reasons to scale vertically include increasing IOPS, increasing CPU/RAM capacity, and increasing disk capacity.
Horizontal Scaling
Horizontal scaling, or increasing the number of nodes in the cluster, reduces the responsibilities of each member node by spreading the keyspace wider and p...
register int i;的含义 - C/C++ - 清泛网 - 专注C/C++及内核技术
...t i;的含义register声明的作用是为了提高效率。它明确要求CPU把变量始终保存在寄存器里面,直至它消亡。不过现代编译器都很厉害,根本不需要你多此一...register声明的作用是为了提高效率。
它明确要求CPU把变量始终保存在寄...
什么是 Ringbuffer ? - C/C++ - 清泛网 - 专注C/C++及内核技术
...者注:数组内元素的内存地址的连续性存储的)。这是对CPU缓存友好的—也就是说,在硬件级别,数组中的元素是会被预加载的,因此在ringbuffer当中,cpu无需时不时去主存加载数组中的下一个元素。(校对注:因为只要一个元...
C++使用多核编译,加快编译速度 - C/C++ - 清泛网 - 专注C/C++及内核技术
...行:加 /MP
Linux make编译时只需要加 -j 指定编译使用CPU核心数:
make -j 4 //使用4个核编译
make -j //不指定数量,则自动探测CPU核心数量,全部参与编译
Eclipse(实际也是指定make -j)
项目属性 -> c/c++ Build -> Behavior -> Enable...
国产操作系统迎发展机遇 业内呼吁建立联盟打造生态 - 资讯 - 清泛网 - 专注...
...结合作。据了解,目前从事操作系统超过十家企业,从事CPU研发的有六七家。倪光南认为:“我们已经有一些掌握操作系统核心技术、掌握CPU核心技术的若干企业,但应该要集中力量办大事。形成一个联盟,制定统一的标准,完...
Mac OS X安装Bochs - 更多技术 - 清泛网 - 专注C/C++及内核技术
.../bin下面
还需要配置对应的配置文件,配置文件中有一个cpu的选项可能会报错,那个地方选别的cpu别选core那个试试就行了。
今天经过三个多小时的奋战,终于把环境搭好了,OH YEAH~
MacOS 安装 Bochs
js/php判断终端类型:PC访问、手机访问、微信访问 - 更多技术 - 清泛网 - ...
...t.*Mobile.*/), //是否为移动终端
ios: !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/), //ios终端
android: u.indexOf('Android') > -1, //android终端
iPhone: u.indexOf('iPhone') > -1, //是否为iPhone
iPad: u.indexOf('iPad') > -1, //是否iPad
webApp: u.indexOf('Safa...
