c++qtassignment-operatorqchar

Does QChar have a '=' operator?

I cannot find the definition of the = operator on its official document, neither can I find it in the source code of QChar. But I can use = without problem.

QChar c = QChar('c');
QChar d = c;
c = d;

Why?

Solution

  • In C++, the compiler generates an implicit assignment operator if the class does not define one.

    From cppreference.com — Copy assignment operator:

    Implicitly-declared copy assignment operator

    If no user-defined copy assignment operators are provided for a class type, the compiler will always declare one as an inline public member of the class.

    For a class such as QChar which only stores a single member of plain old data, the implicit assignment operator is sufficient as all that is required is to copy the member’s value.