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C++ Lock-free Hazard Pointer（冒险指针） - C/C++ - 清泛网 - 专注C/C++及内核技术
...
++cnt_;
return this;
}
void Deref() {
if (--cnt_ == 0) {
delete this;
}
}
private:
std::unique_ptr<T> ptr_;
std::atomic_uint32_t cnt_;
};
仔细观察可以发现：
每一次的读取操作对应引用计数中增加的数值 1；
当所有的...
When is it better to use String.Format vs string concatenation?
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answered Nov 17 '08 at 21:22
Jon SkeetJon Skeet
1211k772772 gold badges85588558 silver badges88218821 bronze badges
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How JavaScript closures are garbage collected
...ut the expected behavior.
From Mozilla's Memory management page: "As of 2012, all modern browsers ship a mark-and-sweep garbage-collector." "Limitation: objects need to be made explicitly unreachable".
In your examples where it fails some is still reachable in the closure. I tried two ways to ma...
Captured variable in a loop in C#
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205
Yes - take a copy of the variable inside the loop:
while (variable < 5)
{
int copy = va...
How do I force a DIV block to extend to the bottom of a page even if it has no content?
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Your problem is not that the div is not at 100% height, but that the container around it is not.This will help in the browser I suspect you are using:
html,body { height:100%; }
You may need to adjust padding and margins as well, but this will get you 90% of the way...
Copy a stream to avoid “stream has already been operated upon or closed”
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10 Answers
10
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Allowed characters in Linux environment variable names
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206
From The Open Group:
These strings have the form
name=value; names shall not contain
th...
How can we run a test method with multiple parameters in MSTest?
...l opinion would be to just stick with NUnit though...
As of Visual Studio 2012, update 1, MSTest has a similar feature. See McAden's answer.
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fo...
PHP Fatal error: Call to undefined function json_decode()
...which states:
The freedom to run the program, for any purpose (freedom 0).
FSF goes on to specifically list the JSON license as nonfree.
Yes it seems a bit silly. Nevertheless Debian has removed the non-compliant JSON extension, and instead offered a replacement extension that is functionally...
Rails: What's a good way to validate links (URLs)?
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Simone CarlettiSimone Carletti
160k3939 gold badges336336 silver badges353353 bronze badges
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