all-in-one/modern-c++

Guide to modern C++

• Essentials of Modern C++ Style CppCon 2014

• Style Guides

• Herb Stutter's style

• Bjarne Stroustrup's C++ Style

C++20

• Error :
  • C2664 - cannot convert ... 'const[4] to char*'
  • C2132 expression didnot evalute to a constant

void myFn(char* data)
{
    std::cout << data;
    return;
}

int main()
{
    myFn("ABC");  ==> error
    myFn(const_cast<char*>("ABC"));  ==> OK
    std::cout << "Hello World!\n";
}

constexpr struct stIniEnumToFilenameMap LogNameMap[] =
{
    {CFileLocation::DEBUG_LOG,        const_cast<TCHAR*>("Dbg.log")},
    {CFileLocation::DEBUG_TIMING_LOG, const_cast<TCHAR*>("DbgTiming.log"},
    {CFileLocation::GUIEVENT_LOG,     const_cast<TCHAR*>("GUIEventLog.log"},
};

• range for loop for each()

for each (auto x in items){}  ==> error

for (auto x : items) {} ==> OK

• Error: C2440 'initializing': cannot convert from 'ATL::CA2CA' to 'std::basic_string<char,std::char_traits,std::allocator>'

std::string strModelName = hardwareIniMotionCard.GetString(osKey.str().c_str(), "Error", FALSE).GetString();  ==> OK - use CString().GetString()