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How to generate random number in Bash?
... seeding. It might be worth mentioning that srand() 's seed is the current CPU time. If you need to specify a specific seed, so RNG can be duplicated, use srand(x) where x is the seed. Also, quoted from GNU awk's numeric function manual, "different awk implementations use different random-number gen...
How to populate/instantiate a C# array with a single value?
...n due to cache thrashing. I'm fairly certain that due to the nature of the CPU cache, performing work in parallel on a single array will always be slower no matter what because the computer expects synchronous work and loads data appropriately.
– TernaryTopiary
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VC窗口刷新InvalidateRect和UpdateWindow - C/C++ - 清泛网 - 专注C/C++及内核技术
...nPaint会怎样？程序会像进入了一个死循环一样达到惊人的CPU占用率，你会发现程序总在处理一个接 一个的WM_PAINT消息。这是因为在通常情况下，当应用收到WM_PAINT消息时，窗口的Update Region都是非空的（如果为空就不需要发送WM_PAI...
Execute script after specific delay using JavaScript
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Of course it is CPU intensive, but for quick and dirty testing it works
– Maris B.
Mar 25 '15 at 9:21
3
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linux svn搭建配置及svn命令详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...定也会出现混乱的情况，版本管理系统就是为了解决这些问题。
SVN中的一些概念 :
a. repository（源代码库）
源代码统一存放的地方。
b. Checkout （提取）
当你手上没有源代码的时候，你需要从repository checkout一份。
c...
How to convert UTF-8 byte[] to string?
...as the C language - and even that was only because of a historical oddity (CPU instructions that dealt with null-terminated strings). .NET only uses null-terminated strings when interopping with code that uses null-terminated strings (which are finally disappearing). It's perfectly valid for a strin...
How to merge two sorted arrays into a sorted array? [closed]
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@will System.arrayCopy() is stupidly fast as it uses CPU-optimised memcpy calls. So there's scope to improve performance by copying chunks. There's also scope to binary search for the boundaries.
– slim
Jun 16 '17 at 16:16
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PHP file_get_contents() and setting request headers
...context-create on php.net
"User-Agent: Mozilla/5.0 (iPad; U; CPU OS 3_2 like Mac OS X; en-us) AppleWebKit/531.21.10 (KHTML, like Gecko) Version/4.0.4 Mobile/7B334b Safari/531.21.102011-10-16 20:23:10\r\n" // i.e. An iPad
)
);
$context = stream_context_create($options);
$file = file...
Converting .NET DateTime to JSON [duplicate]
...rong and more programmer time spent (programmers being more expensive than CPUs).
– gregmac
Apr 2 '13 at 15:15
1
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Does PHP have threading?
... i'll shortly describe both:
A thread is a sequence of commands that the CPU will process. The only data it consists of is a program counter. Each CPU core will only process one thread at a time but can switch between the execution of different ones via scheduling.
A process is a set of shared res...