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Convert a positive number to negative in C#
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@makerofthings7, the one you linked to is a lot more CPU instructions -- an absolute-value operation (at least three instructions on x86), followed by a MUL (or possibly a NEG if the compiler is clever). This answer is a single, lightweight NEG opcode, nothing more or less than...
java.lang.OutOfMemoryError: GC overhead limit exceeded [duplicate]
...d / high memory pressure situations, but on the other hand it used up more CPU, so that the requests took 5-10% longer to execute under normal load situations.
– anre
Oct 13 '16 at 20:40
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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...
Ruby on Rails Server options [closed]
... to note however is that the MRI Ruby interpreter cannot leverage multiple CPU cores even when there are multiple threads, due to the use of the Global Interpreter Lock (GIL). You can work around this by using multiple multi-threaded processes, because each process can leverage a CPU core. JRuby and...
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
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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...