JSON in C++: Designing a Type for Working with JSON values

We'll dive into designing a C++ type for working with JSON values. We will:

• remind ourselves some basic ideas and nuances of type design in C++;
• carefully look back at the standard containers and std::variant;
• try to make the interface easy to use correctly and hard to use incorrectly;
• and add support for C++ allocators.

Along the way, we'll raise a few bumps on the standard library implementations and a compiler.

After the talk, among other things, you will have a good idea of how to cook std::variant.