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Why is my program slow when looping over exactly 8192 elements?
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The following tests have been done with Visual C++ compiler as it is used by the default Qt Creator install (I guess with no optimization flag). When using GCC, there is no big difference between Mystical's version and my "optimized" code. So the conclusion is that compil...
Can a pointer to base point to an array of derived objects?
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As a non c++ adept, mentioning of the SizeOf() helped me understand what @R. Martinho was saying in his answer.
– Marjan Venema
Aug 31 '11 at 6:07
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How to add a default include path for GCC in Linux?
...Try setting C_INCLUDE_PATH (for C header files) or CPLUS_INCLUDE_PATH (for C++ header files).
As Ciro mentioned, CPATH will set the path for both C and C++ (and any other language).
More details in GCC's documentation.
sha...
How can I reliably determine the type of a variable that is declared using var at design time?
...ic Lippert are covered in the code analyzer in the CEDET/Semantic tool for C++ already. There is also a C# parser (which probably needs a little TLC) so the only parts missing are related to tuning the necessary parts for C#.
The basic behaviors are defined in core algorithms that depend on overlo...
What are the complexity guarantees of the standard containers?
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I found the nice resource Standard C++ Containers. Probably this is what you all looking for.
VECTOR
Constructors
vector<T> v; Make an empty vector. O(1)
vector<T> v(n); Make a vector wi...
In which scenario do I use a particular STL container?
I've been reading up on STL containers in my book on C++, specifically the section on the STL and its containers. Now I do understand each and every one of them have their own specific properties, and I'm close to memorizing all of them... But what I do not yet grasp is in which scenario each of the...
Error 'LINK : fatal error LNK1123: failure during conversion to COFF: file invalid or corrupt' after
...ppears to be fine, but now when I try to use Visual Studio 2010 to compile C++ projects, I get the following error message:
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mfc从CImageList中获取CBitmap位图对象 - C/C++ - 清泛网 - 专注C/C++及内核技术
mfc从CImageList中获取CBitmap位图对象通过图像的索引号从CImageList中获取CBitmap位图对象的函数如下： CImageList中获取CBitmap位图对象void GetListImage(CImageList &Imag...通过位图的索引号从CImageList中获取CBitmap位图对象的函数如下：
//CImageL...
error C2804:binary \'operator +\' has too many parameters - C/C++ - 清泛网 - 专注C/C++及内核技术
...操作数，应该重载为普通非成员函数。
注意重载操作符的形参数目（包括成员函数的隐式 this 指针）与操作符的操作数数目相同。对称的操作符，如算术操作符、相等操作符、关系操作符和位操作符，最好定义为普通非成员函...
error C2280: \'std::mutex::mutex(const std::mutex &)\' : attempting to...
...ex &)' : attempting to reference a deleted functionstd::mutex是noncopyable的结构，因此不存在拷贝构造函数，所以这里错误提示引用已经删除的函数。错误示例代码如下：解决方法：将包含std::...std::mutex是noncopyable的结构，因此不存在拷贝构造...