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CruiseControl.Net 进行持续化集成 - IT产品资讯 - 清泛网 - 专注C/C++及内核技术
...ver服务,在启动之前,需要先解决一下可能最影响情绪的问题:我们知道windows services默认情况下是用本地系统账户运行的,可一般情况下我们会在当前操作用户下设置对vss共享目录的访问权限,比如当前windows运行账户为administra...
What is the performance of Objects/Arrays in JavaScript? (specifically for Google V8)
Performance associated with Arrays and Objects in JavaScript (especially Google V8) would be very interesting to document. I find no comprehensive article on this topic anywhere on the Internet.
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程序员之网络安全系列(二):如何安全保存用户密码及哈希算法 - 更多技术 ...
...来我才想起可以用穷举法,最多就999次不就打开了?那么问题来了,你的密码箱还安全吗?
彩虹表
除了穷举法外,由于之前的密码泄露,那么攻击者们,手上都有大量的彩虹表,比如”I love you”,生日等等,这个表保存了这些...
TLSF源码及算法介绍 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...操作系统的内存分配算法,时间复杂度 O(1),在内存碎片问题上表现良好,可以将它看做是一个动态管理内存的内存池,提供分配及回收内存的方法,并能够进行内存碎片化整理。它的特点在于:
可以预期的分配执行时间,无...
how to remove the dotted line around the clicked a element in html
...ter?), remove the outline for just that link (while also resetting any and all links back to have an outline right before said removal ... else things get cumulatively stuck being unoutlined). This temporarily removes the outline from the last clicked element while keeping it on others, so you can s...
Simulator or Emulator? What is the difference?
...a piece of software that mimics existing hardware/software, what should I call it? A simulator or an emulator?
21 Answers
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Fastest way to determine if an integer's square root is an integer
... CPU (x86) and programming language (C/C++). Your results may vary, especially because I don't know how the Java factor will play out.
My approach is threefold:
First, filter out obvious answers. This includes negative numbers and looking at the last 4 bits. (I found looking at the last six di...
Difference between static memory allocation and dynamic memory allocation
...ister' variables. As expected, register variables should be allocated on a CPU's register, but the decision is actually left to the compiler. You may not turn a register variable into a reference by using address-of.
register int meaning = 42;
printf("%p\n",&meaning); /* this is wrong and will...
为AppInventor2开发自己的拓展(Extension) - App Inventor 2 拓展 - 清泛IT社区,为创新赋能!
...能够搞得定的,加油~如果在编译或开发过程中遇到任何问题,欢迎发帖讨论。
谢谢分享谢谢分享谢谢分享
Microsecond timing in JavaScript
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As alluded to in Mark Rejhon's answer, there is an API available in modern browsers that exposes sub-millisecond resolution timing data to script: the W3C High Resolution Timer, aka window.performance.now().
now() is better tha...
