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深入理解 x86/x64 的中断体系 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
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How efficient is locking an unlocked mutex? What is the cost of a mutex?
.../CarloWood/ai-statefultask-testsuite/blob/b69b112e2e91d35b56a39f41809d3e3de2f9e4b8/src/mutex_test.cxx
Note that it has a few hardcoded values specific for my box (xrange, yrange and rdtsc overhead), so you probably have to experiment with it before it will work for you.
The graph it produces in th...
What exactly does git's “rebase --preserve-merges” do (and why?)
...e commits.
– DarVar
Dec 4 '13 at 11:20
20
@DarVar You always loose history on a rebase, because y...
What is the maximum length of a URL in different browsers?
...
Short answer - de facto limit of 2000 characters
If you keep URLs under 2000 characters, they'll work in virtually any combination of client and server software.
If you are targeting particular browsers, see below for more details specific limits.
Longer ans...
How to install mongoDB on windows?
... a simple utube video for windows installation - youtube.com/watch?v=msQ2F5XUgms
– Linus
Apr 23 '17 at 2:41
1
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How to detect a Christmas Tree? [closed]
...is just a simple monochrome brightness test; any pixels with values above 220 on a 0-255 scale (where black is 0 and white is 255) are saved to a binary black-and-white image. The second threshold tries to look for red and yellow lights, which are particularly prominent in the trees in the upper le...
List comprehension on a nested list?
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201
Here is how to convert nested for loop to nested list comprehension:
Here is how nested lis...
Best way to display decimal without trailing zeroes
... static void Main(string[] args)
{
var dList = new decimal[] { 20, 20.00m, 20.5m, 20.5000m, 20.125m, 20.12500m, 0.000m };
foreach (var d in dList)
Console.WriteLine(d.ToString("0.#####"));
}
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What killed my process and why?
...3
dwcdwc
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When to encode space to plus (+) or %20?
...ometimes the spaces get URL encoded to the + sign, some other times to %20 . What is the difference and why should this happen?
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