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网页资料提取器：用 Web 客户端抓网页、按标记提取文字和链接（附 .aia 源...
...、解码 & 等实体
结果导出 CSV 并分享
常见问题
用到的组件
验证范围
网页资料提取：输入网址，选一种提取规则，把网页上的标题、列表、链接或正文提出来，逐条查看、分享，或导出成 CSV 表格。
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What is the most effective way for float and double comparison?
...le floating-point operation is 0.5
// units in the last place. On Intel CPU's, all floating-point
// calculations are done with 80-bit precision, while double has 64
// bits. Therefore, 4 should be enough for ordinary use.
//
// See the following article for more details on ULP:
// htt...
How can I transition height: 0; to height: auto; using CSS?
...uite like the jQuery slideUp/Down. You can see a difference only with weak CPU's, like old computers or mobile, and opening and closing many of them at the same time.
– Cruz Nunez
Jul 1 '16 at 4:12
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Should I Stop Stopwatch at the end of the method?
...
Also a Stopwatch isn't doing any work or eating cpu clock cycles between the calls to Start() and Stop(). Start() just sets a timestamp to now and Stop() calculates and saves the time elapsed since that. See source in coreclr: github.com/dotnet/corefx/blob/master/src/…
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C# DateTime.Now precision
...
Why would DateTime.Now be made less precise than what most CPU clocks could handle?
A good clock should be both precise and accurate; those are different. As the old joke goes, a stopped clock is exactly accurate twice a day, a clock a minute slow is never accurate at any time. Bu...
How do you calculate log base 2 in Java for integers?
...lace a few static math functions with alternative implementations based on CPU intrinsics. One of those functions is Integer.numberOfLeadingZeros(). So with a 1.7 or newer server VM, a implementation like the one in the question is actually slightly faster than the binlog above. Unfortunatly the cli...
Is recursion ever faster than looping?
... sub, mul, div. e.g. add m[7] m[8]
An Executing Agent: a core in a modern CPU. An "agent" is something that can execute instructions. An Agent can also be a person following the algorithm on paper.
Order of steps: a sequence of instructions: i.e.: do this first, do this after, etc. An imperative se...
App Inventor 2 AnimatedGif扩展教程 - 显示GIF动画 · App Inventor 2 中文网
... GIF文件放置位置
替代方案：WebView显示GIF
常见问题
Q1: GIF不显示动画？
Q2: GIF播放卡顿？
Q3: 可以从网络加载GIF吗？
总结
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概述
App Inventor内置的Image组件只能显示...
Thread vs ThreadPool
...than the main thread pool. If one has a lot of tasks to perform which are CPU intensive but won't block, it may be helpful to dispatch them using a pool of application threads (one per CPU core) which is separate from the "main" threadpool, since using more threads than cores will be counterprod
京东618：算法让UV价值提升200%+，用智能卖场缩短购物路径 - 更多技术 - 清...
...区画像，除了界面的差异，两者在后端的处理上要解决的问题有什么不同？对推荐搜索和移动研发、交易平台研发的协作有什么样的要求？
智能卖场团队：这两者要解决的问题本质上是相同的，所以用的算法引擎是相同的。但...