Complete Modern C++ - Union - II

The video tutorial explains the use of unions in C++ to store objects of user-defined types. It highlights the challenges with constructors and destructors when using unions, emphasizing the need for manual implementation. The tutorial demonstrates the use of the placement new operator for initializing objects within a union and discusses the limitations of unions. It concludes with an introduction to the C++17 variant, a typesafe alternative to unions.

Discuss the limitations of using unions with user defined types.

What is the purpose of the variant type introduced in C++17, and how does it relate to unions?