const-reference
How to return a const QString reference in case of failure?
consider the following code: const QString& M开发者_如何学JAVAyClass::getID(int index) const[详细]
2022-12-21 23:41 分类:问答Reference initialization in C++
Can anybody explain to me why there is a difference between these two statements? class A{}; const A& a = A();// correct[详细]
2022-12-20 19:21 分类:问答