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Why is processing a sorted array faster than processing an unsorted array?
... of data[].)
Benchmarks: Core i7 920 @ 3.5 GHz
C++ - Visual Studio 2010 - x64 Release
// Branch - Random
seconds = 11.777
// Branch - Sorted
seconds = 2.352
// Branchless - Random
seconds = 2.564
// Branchless - Sorted
seconds = 2.587
Java - NetBeans 7.1.1 JDK 7 - x64
// Branch - Random
sec...
Get exception description and stack trace which caused an exception, all as a string
...xception output...
ZeroDivisionError
Python 3.4.2: C:\tools\python\python.exe
Tue Sep 22 15:29:33 2015
A problem occurred in a Python script. Here is the sequence of
function calls leading up to the error, in the order they occurred.
c:\TEMP\cgittest2.py in <module>()
7 def func1(a, b...
Convert bytes to a string
...
lmiguelvargasflmiguelvargasf
32.6k2424 gold badges141141 silver badges152152 bronze badges
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How can I check for NaN values?
...an too. If you constructed an actual NumPy NaN with something like np.float64('nan'), then you'd get np.float64('nan') is not np.float64('nan') too.
– user2357112 supports Monica
Apr 22 at 10:09
...
AES vs Blowfish for file encryption
... figured a 16-round version would be sufficient -- so they doubled that to 32 rounds. The best attack currently known is effective against only 11 rounds. If the original question hadn't specifically restricted the choices to AES and Blowfish, and simply asked for the most secure, reasonably well-kn...
Why should I use core.autocrlf=true in Git?
...CRLF regardless on platform, which can be a problem.
You code with Notepad.exe (unless you are using a Windows 10 2018.09+, where Notepad respects the EOL character detected).
Unless you can see specific treatment which must deal with native EOL, you are better off leaving autocrlf to false (git ...
Getting time elapsed in Objective-C
... a link with much more information here: https://stackoverflow.com/a/23378064/588476
In light of that information, maybe it is safer to use Apple's function CACurrentMediaTime!
I also benchmarked the mach_timebase_info call and it takes approximately 19ns on my iPhone 6, so I removed the (not thre...
MAC下如何删除NTFS格式U盘的东西？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...权限给NTFS、FAT32给硬盘和U盘，我们99%使用的硬盘和U盘都是...mac上只提供了它自身磁盘格式（mac os 扩展日子）等的读写权限，只提供了读的权限给NTFS、FAT32给硬盘和U盘，我们99%使用的硬盘和U盘都是这个格式的，所以大家在mac上...
大佬们，串口输出的文本字符怎么不能比较，也不能转换数字类型？ - App应用...
...怎么不能比较，也不能转换数字类型？你好，App Inventor 2 是弱语言类型，文本和数字之间不用刻意去转换，之间赋值就可以了：https://www.fun123.cn/reference/blocks/text.html#text2num
再次经过测试，你上面的步骤都能正常测试通过，方...
有没有其他方式 在app上接收jpeg数据流变成视频？ - App应用开发 - 清泛IT...
...192.168.4.1/stream"
EnableJavaScript = True
原理：MJPEG 本质是服务器连续发送 JPEG 帧，WebViewer 自动渲染成视频
其他方案对比
方案 适用场景 缺点
Timer + Image 轮询 单帧 JPEG URL 每帧重建连接，效率低、延迟高
Web + Canvas 自...