Is there any C++ book that talks about how to implement variants?

Question

Modern C++ design only gets me to typelists.

C++ templates the complete guide brings me only to tuples.

I want to learn how to _implement variants.

Does any C++ book explains this?

Thanks!

Answer 1

Here is somthing its not a book but an article.

Answer 2

I'm not familair with a book that describes this topic, but for starters, I would study the Boost Variant implementation.