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Programmatically find the number of cores on a machine
Is there a way to determine how many cores a machine has from C/C++ in a platform-independent way? If no such thing exists, what about determining it per-platform (Windows/*nix/Mac)?
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Is the sizeof(some pointer) always equal to four?
...t;< "D:" << sizeof(void (D::*)()) << endl;
}
Under Visual C++ 2008, I get 4, 12 and 8 for the sizes of the pointers-to-member-function.
Raymond Chen talked about this here.
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What are the rules for evaluation order in Java?
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Am I correct that C++ doesn't guarantee this? What about Python?
– Neil G
Jul 23 '11 at 21:05
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How to initialize all members of an array to the same value?
I have a large array in C (not C++ if that makes a difference). I want to initialize all members of the same value.
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MFC CListCtrl使用方法详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...141834: How to change the icon or the bitmap of a CListCtrl item in Visual C++
http://support.microsoft.com/kb/141834/en-us
How to change the icon or the bitmap of a
CListCtrl item in Visual C++
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Article ID
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141834
Last Review
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Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...譬如Paint的实例化操作不要写在onDraw()方法中等）；
对于并发下载等类似逻辑的实现尽量避免多次创建线程对象，而是交给线程池处理。
当然了，有了上面说明GC导致的性能后我们就该定位分析问题了，可以通过运行DDMS->Alloca...
Swift and mutating struct
... concept, but in Swift, you can do this with one struct. Half work.
For C/C++ programmers, this is also very familiar concept. This is exactly what const keyword do in C/C++.
Also, immutable value can be very nicely optimised. In theory, Swift compiler (or LLVM) can perform copy-elision on values ...
How can I iterate over an enum?
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With c++11, there actually is an alternative: writing a simple templatized custom iterator.
let's assume your enum is
enum class foo {
one,
two,
three
};
This generic code will do the trick, quite efficiently - place in ...
How to debug heap corruption errors?
I am debugging a (native) multi-threaded C++ application under Visual Studio 2008. On seemingly random occasions, I get a "Windows has triggered a break point..." error with a note that this might be due to a corruption in the heap. These errors won't always crash the application right away, altho...
When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?
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const_cast can be used to remove or add const to a variable; no other C++ cast is capable of removing it (not even reinterpret_cast). It is important to note that modifying a formerly const value is only undefined if the original variable is const; if you use it to take the const off a referenc...