Modern C++ Programming Cookbook

How it works...

The move constructor and move assignment operator are provided by default by the compiler unless a user-defined copy constructor, move constructor, copy assignment operator, move assignment operator, or destructor exists already. When provided by the compiler, they perform a movement in a member-wise manner. The move constructor invokes the move constructors of the class data members recursively; similarly, the move assignment operator invokes the move assignment operators of the class data members recursively.

Move, in this case, represents a performance benefit for objects that are too large to copy (such as a string or container) or for objects that are not supposed to be copied (such as the unique_ptr smart pointer). Not ...