You are mixing code that was compiled with /MD (use DLL version of CRT) with code that was compiled with /MT (use static CRT library). That cannot work, all source code files must be compiled with the same setting. Given that you use libraries that were pre-compiled with /MD, almost always the correct setting, you … Read more
I found it here: Ox and O2 are almost identical. They differ only in the fact that O2 also throws GF and Gy. There is almost no reason to avoid throwing these two switches.
Use the std::vector::insert function accepting an iterator to the first element as a target position (iterator before which to insert the element): #include <vector> int main() { std::vector<int> v{ 1, 2, 3, 4, 5 }; v.insert(v.begin(), 6); } Alternatively, append the element and perform the rotation to the right: #include <vector> #include <algorithm> int main() … Read more
OutputDebugString function will do it. example code void CClass::Output(const char* szFormat, …) { char szBuff[1024]; va_list arg; va_start(arg, szFormat); _vsnprintf(szBuff, sizeof(szBuff), szFormat, arg); va_end(arg); OutputDebugString(szBuff); }
First change the following parameters: Tools -> Options -> Debugging -> Symbols -> Server -> Yes Then press Ctrl+F5 and you will see amazing things.
A compiler bug… From assembly provided by @anastaciu, the direct cast code calls __ftol2_sse, which seems to convert the number to a signed long. The routine name is ftol2_sse because this is an sse-enabled machine – but the float is in a x87 floating point register. ; Line 17 call _getDouble call __ftol2_sse push eax … Read more
This will work with multiple compilers (and different versions of compilers). Header “push” #if defined(__clang__) # pragma clang diagnostic push #endif #if defined(_MSC_VER) # pragma warning(push) #endif #if defined(YOUR_FAVORITE_COMPILER) # pragma your compiler push warning #endif Header “pop” #if defined(__clang__) # pragma clang diagnostic pop #endif #if defined(_MSC_VER) # pragma warning(pop) #endif Some warning #if … Read more
std::advance( iter, 2 ); This method will work for iterators that are not random-access iterators but it can still be specialized by the implementation to be no less efficient than iter += 2 when used with random-access iterators.
I had a similar problem with linker warning LNK4042: object specified more than once; extras ignored. In my case Visual Studio was trying to compile both header and source files with the same name – MyClass.h and MyClass.cpp. It happened because I renamed .cpp file to .h and Visual Studio got confused. I noticed the … Read more
int() is a constant expression with a value of 0, so it’s a valid way of producing a null pointer constant. Ultimately, it’s just a slightly different way of saying int *ptr = NULL;