C++ Primer Plus

Special Member Functions

C++11 adds two more special member functions (the move constructor and the move assignment operator) to four previous ones (the default constructor, the copy constructor, the copy assignment operator, and the destructor). These are member functions that the compiler provides automatically, subject to a variety of conditions.

The default constructor, recall, is a constructor that can be called with no arguments. The compiler provides one if you fail to define any constructors for the class. This default version of a default constructor is termed the defaulted default constructor. The defaulted default constructor leaves members of the built-in types uninitialized, and it invokes the default constructors for members that ...