The author discusses adding JSON de/serialization utility to a C++ webserver, highlighting the absence of some features like static reflection and pattern matching in C++ at first. However, it turns out that modern C++ does have similar features hidden. The concept of pattern matching is explored using Mathematica examples, showing how it can simplify code. The author explains how to handle JSON in a type-safe manner in C++ using atomic and compound types, making the parser easily adaptable to changing JSON structures. The article also delves into making the code constexpr and introduces unique concepts like IdempotentJSONTag and nullable types. The implementation of JSON parsing and manipulation methods is detailed, with a focus on constexpr functions.
https://medium.com/@abdulgh/compile-time-json-deserialization-in-c-1e3d41a73628